Fabian A. Mendoza Ballesteros, M.D
Rheumatology Physician · Philadelphia, PA
Fabian A. Mendoza Ballesteros, M.D is a rheumatology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1164689840, issued on May 20, 2008. Check the license (Pennsylvania MD436636, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Fabian A. Mendoza Ballesteros
- Credential
- M.D
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License numbers
- MD436636 PA
003041 NY
Self-reported in NPPES; status is on the state search - Practice location
- 211 S 9TH St, Philadelphia, PA 19107
- Phone
- (215) 955-8430
- Enumerated
- May 20, 2008
- Record last updated
- Nov 20, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (215) 923-5828
- Medicaid IDs
- 0197271 NJ
102331909 PA - Medicare enrollment
- Enrolled (PECOS I20090625000332); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 413 in Pennsylvania → Look up another NPI →
Also registered at 211 S 9TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Fabian A. Mendoza Ballesteros in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD436636Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,516 Medicare Part D claims for 263 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims. 12 claims were for opioids.
Most prescribed
- Prednisone213 claims
- Methotrexate167 claims
- Mycophenolate Mofetil166 claims
- Hydroxychloroquine Sulfate77 claims
- Alendronate Sodium71 claims
- Amlodipine Besylate51 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.
Industry payments in 2024: $1,463.91
9 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
- Jefferson University PhysiciansPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Fabian A. Mendoza Ballesteros among 413 rheumatology physician records in Pennsylvania
Fabian A. Mendoza Ballesteros, 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 2008, is newer than 58% of them.
- NPI issued2008 · 58% of these records are older, 38% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1999 · median 2004 among the 275 with a school on file
- Record last updated2014 · 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
- Soumya Chakravarty, M.D.Philadelphia, PA 191071265691216
- David Chen, MDPhiladelphia, PA 191071093941510
- Alan Epstein, M.D.Philadelphia, PA 191071346211844
- Arthur Huppert, MDPhiladelphia, PA 191071871523324
- Oscar Irigoyen, MDPhiladelphia, PA 191071114929585
- Sergio Jimenez, M.D.Philadelphia, PA 191071164445763
- Marianthi Kiriakidou, MDPhiladelphia, PA 191071457396475
- Michele Meltzer, M.D.Philadelphia, PA 191071346245073
Common questions
What is Fabian A. Mendoza Ballesteros, M.D's NPI number?
Fabian A. Mendoza Ballesteros, M.D's National Provider Identifier (NPI) is 1164689840, issued on May 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Fabian A. Mendoza Ballesteros, M.D located?
The NPPES record lists a practice address at 211 S 9TH St, Philadelphia, PA, 19107. Phone: (215) 955-8430. Providers update this record themselves, so call before visiting.
How can I verify Fabian A. Mendoza Ballesteros, M.D's license?
NPPES lists Pennsylvania license number MD436636, 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 Fabian A. Mendoza Ballesteros, M.D prescribe under Medicare Part D?
In 2024, Fabian A. Mendoza Ballesteros, M.D had 1,516 Medicare Part D claims for 263 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
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.