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Board CertifiedAAO MemberAccepting new patients

Philadelphia Orthodontists

Philadelphia-based orthodontic practice offering Invisalign and conventional braces for adults and teens.

1601 Walnut St #1513, Philadelphia, PA 19102
4.9(383 reviews)
Call Now(215) 665-1845WebsiteDirections

About Philadelphia Orthodontists

Missing or unusually sized teeth get worked into Invisalign plans under Dr. William Roberts, alongside braces for both kids and adults.

Philadelphia Orthodontists sees a high volume of Invisalign and clear aligner cases, including corrections for crowding, missing teeth, and open bites left over from teenage relapse. Reviews describe Dr. William Roberts, along with Dr. Daniel Markel and Dr. DeMarsche, working through unusual or difficult tooth movement rather than routine cases alone. Staff members, including several named assistants, are described as warm and efficient with insurance paperwork, and appointments are generally reported as running on schedule.

Summary of 200 patient reviews, December 2021–August 2026, updated September 2026

Philadelphia-based orthodontic practice offering Invisalign and conventional braces for adults and teens.

Drs. Roberts, de Marsche, and Markel have treated over 3,000 patients across two locations in Center City Philadelphia and Lawrenceville, New Jersey.

Treatments offered

InvisalignInvisalignClear AlignersClear AlignersTraditional BracesTraditional BracesClear BracesClear BracesRetainersRetainers
GuidesHow much does Invisalign cost? →Clear aligner costs explained →Adult braces cost guide →

Who They Treat

Philadelphia Orthodontists provides orthodontic treatment for the following age groups:

Children
Ages 6–11
Teens
Ages 12–17
Adults
Ages 18+

Technology & Equipment

Philadelphia Orthodontists uses modern orthodontic technology to deliver precise, comfortable treatment.

Accelerated Treatment

Orthodontists at this office

provider
headshot

Dr. Daniel Markel, DMD

NPI verified · no bio or photo on file

Lead OrthodontistNPI VERIFIEDAccepting New Patients
provider
headshot

Dr. Tanja de Marsche

NPI verified · no bio or photo on file

Accepting New Patients
provider
headshot

Dr. William Roberts, DMD

NPI verified · no bio or photo on file

NPI VERIFIEDAccepting New Patients

Insurance accepted

6 plans listed
AetnaCignaDelta Dental PPODelta Dental PremierMetLifeUnited Concordia
Practice participates with most private insurance plans and coordinates benefits and paperwork with providers.

What patients say

Latest review 3 months ago

What patients praise

  • Invisalign and clear aligners are used for complex situations like missing teeth, unusual tooth sizing, and crowding rather than just straightforward cases.
  • Some patients report finishing Invisalign treatment in around eight months or on a fast-tracked schedule combining braces and aligners.
  • Named staff members are repeatedly praised for handling insurance paperwork and keeping the office running efficiently.

Things to know

  • A few reviews describe treatment results that fell short, including a bite issue that reportedly worsened or teeth pushed too far.
  • A few reviews mention treatment taking longer than expected, with one describing a multi-year case still unresolved.

Who it suits

  • Adults seeking Invisalign for complex bite or crowding issues
  • Families with multiple children in treatment

Doctors patients mention

  • Dr. William Roberts · 118 reviews
  • Dr. Daniel Markel · 8 reviews
  • Dr. DeMarsche · 12 reviews
Last 90 days
9 reviews
averaging 5.0★
Last 12 months
53 reviews
averaging 5.0★
Owner replies
4% of reviews
typically within 21 days
Compared with Philadelphia
Higher rated than 54%
of 24 practices we track
Reviews per month
11
Oct 2023Sep 2026
Reviews per month
Oct 20232
Nov 20236
Dec 20231
Jan 20245
Feb 20246
Mar 20243
Apr 20241
May 20249
Jun 20246
Jul 20248
Aug 20244
Sep 20242
Oct 20240
Nov 20240
Dec 20240
Jan 20250
Feb 20251
Mar 20256
Apr 20255
May 20251
Jun 20251
Jul 20250
Aug 20251
Sep 20253
Oct 20254
Nov 20251
Dec 20253
Jan 20265
Feb 20265
Mar 202610
Apr 20264
May 20262
Jun 202611
Jul 20265
Aug 20263
Sep 20260
Star ratings
  • 5★400
  • 4★2
  • 3★1
  • 2★1
  • 1★5
Average rating by year
  • 20135.0
  • 20155.0
  • 20165.0
  • 20174.6
  • 20184.9
  • 20194.9
  • 20205.0
  • 20214.9
  • 20225.0
  • 20234.9
  • 20244.9
  • 20255.0
  • 20265.0
1★5★
Treatments patients mention
  • Invisalign / clear aligners52
  • Braces13
  • Retainers5
What patients talk about
PraiseCriticism
  • Friendly staff106 / 1
  • The orthodontist78 / 1
  • Treatment results74 / 2
  • Scheduling & wait times20
  • Clear explanations17 / 1
  • Treatment timeline14 / 3
  • Gentle, comfortable care14 / 1
  • Office & technology11
What patients talk about
ThemePraiseCriticism
Friendly staff1061
The orthodontist781
Treatment results742
Scheduling & wait times200
Clear explanations171
Treatment timeline143
Gentle, comfortable care141
Office & technology110

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Recent reviews from Google

4.9
383 reviews
Cayla McCaughan
Cayla McCaughan
a month ago
“

I had a fantastic experience with Dr. Roberts and team! Dr. Roberts is an experienced, knowledgeable orthodontist and I felt very confident in his care. Everyone in the office is welcoming, friendly, and accommodating. A special thank you to Judy, the orthodontic technician, for always being so kind and helpful. The entire process was smooth, and I’m thrilled with the results. My teeth are exactly as I hoped. Highly recommend!

Review from Google

Tolanda Cunningham
Tolanda Cunningham
a month ago
“

By far, this has been the best experience I’ve ever had with braces from start to finish. I started my journey as Dr. Roberts’ patient and was later transferred to Dr. Dan. That’s where the real magic happened! He saw even more ways to enhance my smile and took it from great to absolutely amazing. The entire team is incredible. Every visit, I’m welcomed with such positive energy. Everyone is genuinely kind, happy, and makes you feel like family. They always take the time to have great conversations, making every appointment enjoyable instead of stressful. If you’re thinking about getting braces for yourself or your children, this is truly the top-tier place to go. I couldn’t be happier with my results or my experience. They get a 100/100 from me, and I highly recommend them!

Review from Google

Nick Johnson
Nick Johnson
a month ago
“

Needed a retainer replacement and the whole process was painless. Staff was friendly, the turnaround was quick, and everything was handled without any hassle. Would definitely come back.

Review from Google

Jada G
Jada G
2 months ago
“

My experience at Philadelphia Orthodontists was incredible!! Dr. Dan is absolutely lovely and has wonderful “bedside” manor. Honestly, the entire team is great. Ny helped me several times and was very patient. If you’re thinking about getting braces as an adult DO IT!! I can’t wait to show off my PERFECT teeth at my wedding. Thank you sooooooo much Dr. Dan.

Review from Google

Siera Hicks
Siera Hicks
2 months ago
“

I have been a patient here for over 10 years and I would still recommend them! They are excellent and Ive been told my teeth is my biggest flex. 10/10!

Review from Google

Read all 383 reviews on Google →

Questions about this practice

What orthodontic treatments does Philadelphia Orthodontists offer?+
Philadelphia Orthodontists offers: Invisalign, Clear Aligners, Traditional Braces, Clear Braces, Retainers.
Does Philadelphia Orthodontists accept dental insurance?+
Philadelphia Orthodontists accepts Aetna, Cigna, Delta Dental PPO, Delta Dental Premier, MetLife, and others.
Does Philadelphia Orthodontists offer free consultations?+
Yes, Philadelphia Orthodontists offers a free initial orthodontic consultation. Call (215) 665-1845 to schedule.
Is Philadelphia Orthodontists accepting new patients?+
Philadelphia Orthodontists is currently welcoming new patients in Philadelphia, PA. Call (215) 665-1845 to schedule.
Where is Philadelphia Orthodontists located?+
Philadelphia Orthodontists is located at 1601 Walnut St #1513. Get directions: https://maps.google.com/?cid=7002394229752948383&g_mp=CiVnb29nbGUubWFwcy5wbGFjZXMudjEuUGxhY2VzLkdldFBsYWNlEAIYBCAA
What are the office hours for Philadelphia Orthodontists?+
Philadelphia Orthodontists office hours: Mon 9:00 AM–5:00 PM, Tue 9:00 AM–5:00 PM, Wed 9:00 AM–5:00 PM, Thu 9:00 AM–5:00 PM, Fri 9:00 AM–5:00 PM, Sat Closed–Closed, Sun Closed–Closed.
Does Philadelphia Orthodontists offer payment plans?+
Yes, Philadelphia Orthodontists offers flexible payment plans to make orthodontic treatment affordable.
Who are the orthodontists at Philadelphia Orthodontists?+
Philadelphia Orthodontists is staffed by Dr. Daniel Markel, Dr. Tanja de Marsche, Dr. William Roberts. The practice is a member of the American Association of Orthodontists (AAO) and board-certified.
What is the patient rating for Philadelphia Orthodontists?+
Philadelphia Orthodontists has a 4.9-star rating based on 383 patient reviews on Google.
How long has Philadelphia Orthodontists been in practice?+
Philadelphia Orthodontists has been providing orthodontic care since 1978, serving the Philadelphia, PA community for over 48 years.

Other Philadelphia Orthodontists locations

Dr. William W. Roberts III, DMD
1601 Walnut St #1513, Philadelphia · 5.0 (53) · Board certified
View →
Lawrenceville Orthodontists
39 Franklin Corner Rd, Lawrence Township · 5.0 (226) · Board certified
View →

Research with AI

ChatGPTPerplexityClaude
1601 Walnut St #1513
Philadelphia, PA 19102
Get Directions
(215) 665-1845
philadelphiaorthodontists.com/
Open in Google Maps
Accepting new patients
Est. 1978
Free Consultation
Payment Plans Available
In-House Financing
Weekend Hours
Online Booking Available

Accessibility & Parking

Wheelchair Accessible Entrance
Wheelchair Accessible Restroom
CashCredit CardsDebit CardsContactless / NFCCareCredit
Mon9:00 AM – 5:00 PM
Tue9:00 AM – 5:00 PM
Wed9:00 AM – 5:00 PM
Thu9:00 AM – 5:00 PM
Fri9:00 AM – 5:00 PM
SatClosed
SunClosed
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Back to Philadelphia Orthodontists

Nearby orthodontists in Philadelphia

Within 1 miles

Brace Busters

4.9 · (839) · Philadelphia

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Farrow Orthodontics - City Center

5.0 · (460) · Philadelphia · 0 mi

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Roberts & de Marsche

5.0 · (4) · Philadelphia · 0 mi

✓ Board certified · AAO member

View all Philadelphia orthodontists →
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