Andrew Lee Mermelstein, MD
Rheumatology Physician · East Norriton, PA
Andrew Lee Mermelstein, MD is a rheumatology physician with a practice address in East Norriton, Pennsylvania, and NPI 1215920335, issued on Aug 24, 2005. Check the license (Pennsylvania MD061891L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Andrew Lee Mermelstein
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- MD061891L PA
Self-reported in NPPES; status is on the state search - Practice location
- 170 W. Germantown Pike, East Norriton, PA 19401
- Phone
- (610) 277-2750
- Enumerated
- Aug 24, 2005
- Record last updated
- Nov 29, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (610) 277-7949
- Medicare enrollment
- Enrolled (PECOS I20100826000601); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 1994
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 413 in Pennsylvania → Look up another NPI →
Also registered at 170 W. Germantown Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kerry Stone, MDRheumatology Physician1003865353
Verify Andrew Lee Mermelstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD061891LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% more Medicare Part D claims than the average rheumatology physician in 2024
3,536 Medicare Part D claims for 609 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 344 claims were for opioids.
Most prescribed
- Prednisone417 claims
- Methotrexate405 claims
- Hydroxychloroquine Sulfate263 claims
- Celecoxib262 claims
- Alendronate Sodium251 claims
- Gabapentin184 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Phoenix Rehabilitation And Health Services IncCranberry Twp, PA
- Rheumatology Associates LtdEast Norriton, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrew Lee Mermelstein among 413 rheumatology physician records in Pennsylvania
Andrew Lee Mermelstein, MD 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
- Graduated1994 · median 2004 among the 275 with a school on file
- Record last updated2007 · 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).
4 rheumatology physician records list a practice address in East Norriton
They are 4 of the 347 NPPES records with a practice address in East Norriton, and 413 rheumatology physician records in Pennsylvania.
All 413 in Pennsylvania → Every provider in East Norriton → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Arati Karhadkar, M.D.Norristown, PA 194011982890448
- Kate McDonough, D.O.Norristown, PA 194011174918551
- Daniel Norden, MDEast Norriton, PA 194011548252679
- Kerry Stone, MDEast Norriton, PA 194011003865353
- Muznay Khawaja, M.D.East Norriton, PA 194031962840298
- Damon Bass, D.O.King Of Prussia, PA 194061568722726
- Myron Chu, D.O.King Of Prussia, PA 194061376523837
- Regina Kurrasch, M.D.King Of Prussia, PA 194061184980476
Common questions
What is Andrew Lee Mermelstein, MD's NPI number?
Andrew Lee Mermelstein, MD's National Provider Identifier (NPI) is 1215920335, issued on Aug 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Lee Mermelstein, MD located?
The NPPES record lists a practice address at 170 W. Germantown Pike, East Norriton, PA, 19401. Phone: (610) 277-2750. Providers update this record themselves, so call before visiting.
How can I verify Andrew Lee Mermelstein, MD's license?
NPPES lists Pennsylvania license number MD061891L, 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 Andrew Lee Mermelstein, MD prescribe under Medicare Part D?
In 2024, Andrew Lee Mermelstein, MD had 3,536 Medicare Part D claims for 609 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Andrew Lee Mermelstein, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.