Marissa A. Blum, MD
Rheumatology Physician · Philadelphia, PA
Marissa A. Blum, MD is a rheumatology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1316080229, issued on Feb 14, 2007. Check the license (Pennsylvania MD431822, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Marissa A. Blum
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- MD431822 PA
Self-reported in NPPES; status is on the state search - Practice location
- 3401 N Broad St, Philadelphia, PA 19140
- Phone
- (215) 707-4600
- Enumerated
- Feb 14, 2007
- Record last updated
- Dec 14, 2023
- Medicare enrollment
- Enrolled (PECOS I20090731000012); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 413 in Pennsylvania → Look up another NPI →
Also registered at 3401 N Broad St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tori Abdalla, DOInternal Medicine Physician1942091699
- Ahmad Abdeen, MDSurgery Physician1033900642
- Rehab Abdel-Kariem, M.D.Emergency Medicine Physician1508008434
- Abdelaal Abdelbaky, MDNeurological Surgery Physician1437429107
- Ziyodakhon Abdujabborova, MDInternal Medicine Physician1699391839
- Asia Abdul-Haqq, CNMAdvanced Practice Midwife1588679161
Verify Marissa A. Blum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD431822Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average rheumatology physician in 2024
949 Medicare Part D claims for 234 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Hydroxychloroquine Sulfate121 claims
- Prednisone94 claims
- Methotrexate63 claims
- Celecoxib59 claims
- Gabapentin42 claims
- Humira(Cf) Pen40 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): 85.5 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).
Bills Medicare through one group practice
- Temple Faculty Practice Plan IncPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa A. Blum among 413 rheumatology physician records in Pennsylvania
Marissa A. Blum, 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 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 42% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2004 · median 2004 among the 275 with a school on file
- Record last updated2023 · 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 Philadelphia → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Steven Berney, MDPhiladelphia, PA 191401144217043
- Lawrence Brent, MDPhiladelphia, PA 191401043271729
- Philip Cohen, MDPhiladelphia, PA 191401235167362
- Xuan GaoPhiladelphia, PA 191401528485885
- Arundathi Jayatilleke, MDPhiladelphia, PA 191401427232834
- Terrence Kilfoil, D.O.Philadelphia, PA 191401992914584
- Yiu Tak Leung, MD PHDPhiladelphia, PA 191401790947075
- Catherine Najem, M.DPhiladelphia, PA 191401205190584
Common questions
What is Marissa A. Blum, MD's NPI number?
Marissa A. Blum, MD's National Provider Identifier (NPI) is 1316080229, issued on Feb 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marissa A. Blum, MD located?
The NPPES record lists a practice address at 3401 N Broad St, Philadelphia, PA, 19140. Phone: (215) 707-4600. Providers update this record themselves, so call before visiting.
How can I verify Marissa A. Blum, MD's license?
NPPES lists Pennsylvania license number MD431822, 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 Marissa A. Blum, MD prescribe under Medicare Part D?
In 2024, Marissa A. Blum, MD had 949 Medicare Part D claims for 234 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Marissa A. Blum, MD's MIPS final score?
The 2023 MIPS final score is 85.5 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.