Stephanie Diane Flagg, M.D.
Rheumatology Physician · Bryn Mawr, PA
Stephanie Diane Flagg, M.D. is a rheumatology physician with a practice address in Bryn Mawr, Pennsylvania, and NPI 1780682815, issued on Jul 12, 2005. Check the license (Pennsylvania MD073853L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Stephanie Diane Flagg
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- MD073853L PA
Self-reported in NPPES; status is on the state search - Practice location
- 825 Old Lancaster RD, Bryn Mawr, PA 19010
- Phone
- (610) 527-3800
- Enumerated
- Jul 12, 2005
- Record last updated
- Apr 5, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (610) 527-2854
- Medicaid IDs
- 0019746800003 PA
0019746800001 PA - Medicare enrollment
- Enrolled (PECOS I20070718000333); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 413 in Pennsylvania → Look up another NPI →
Also registered at 825 Old Lancaster RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Stephanie Diane Flagg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD073853LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average rheumatology physician in 2024
2,564 Medicare Part D claims for 431 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 290 claims were for opioids.
Most prescribed
- Hydroxychloroquine Sulfate449 claims
- Methotrexate271 claims
- Prednisone176 claims
- Leflunomide168 claims
- Duloxetine Hcl134 claims
- Tramadol Hcl116 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 95.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,092.00
90 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Bryn Mawr Medical Specialists AssociationBryn Mawr, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephanie Diane Flagg among 413 rheumatology physician records in Pennsylvania
Stephanie Diane Flagg, M.D. is one of 413 rheumatology physician records with a practice address in Pennsylvania. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1998 · median 2004 among the 275 with a school on file
- Record last updated2017 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Pennsylvania
There are 413 rheumatology physician records in Pennsylvania.
All 413 in Pennsylvania → Every provider in Bryn Mawr → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Jay Ghadiali, M.D.Bryn Mawr, PA 190101053760835
- Donald Miller, M.D.Bryn Mawr, PA 190101376569418
- Pierre Minerva, M.D.Bryn Mawr, PA 190101699708099
- Sarah Stoots, M.D.Bryn Mawr, PA 190101639601289
- Kendra Zuckerman, M.D.Bryn Mawr, PA 190101154351294
- Susan Hoch, MDChester, PA 190131104977982
- Barbara Matteucci, MDChester, PA 190131629120076
- Lawrence Leventhal, M.D.Huntingdon Valley, PA 190061174521165
Common questions
What is Stephanie Diane Flagg, M.D.'s NPI number?
Stephanie Diane Flagg, M.D.'s National Provider Identifier (NPI) is 1780682815, issued on Jul 12, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Stephanie Diane Flagg, M.D. located?
The NPPES record lists a practice address at 825 Old Lancaster RD, Bryn Mawr, PA, 19010. Phone: (610) 527-3800. Providers update this record themselves, so call before visiting.
How can I verify Stephanie Diane Flagg, M.D.'s license?
NPPES lists Pennsylvania license number MD073853L, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stephanie Diane Flagg, M.D. prescribe under Medicare Part D?
In 2024, Stephanie Diane Flagg, M.D. had 2,564 Medicare Part D claims for 431 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Stephanie Diane Flagg, M.D.'s MIPS final score?
The 2023 MIPS final score is 95.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.