NPPES file of Aug 9, 2026

Brian M. Diller, PA-C

Surgical Physician Assistant · Baltimore, MD

Brian M. Diller, PA-C is a surgical physician assistant with a practice address in Baltimore, Maryland, and NPI 1558746586, issued on Jul 20, 2015. Check the license (Maryland C0005837, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1558746586
Name
Brian M. Diller
Credential
PA-C
Primary taxonomy
Surgical Physician Assistant 363AS0400X
License number
C0005837 MD
Self-reported in NPPES; status is on the state search
Practice location
201 E University Pkwy, Baltimore, MD 21218
Phone
(443) 690-5751
Enumerated
Jul 20, 2015
Record last updated
Jul 20, 2015 (not updated in 11 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20151202001169); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 201 E University Pkwy

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jessica Addis, DPTPhysical Therapist1457675381
  2. Kehinde Adedulu, NPFamily Nurse Practitioner1821856642
  3. Biplov AdhikariStudent in an Organized Health Care Education/Training Program1780256800
  4. Yehudah Adler, PMHNPPsychiatric/Mental Health Nurse Practitioner1750124210
  5. Anup AgarwalInternal Medicine Physician1366844722
  6. Moses Agbonavbare, PA-CSurgical Physician Assistant1578225439

Verify Brian M. Diller in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maryland board licenses this profession
    Search for license C0005837
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Maryland license search

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62% fewer Medicare Part D claims than the average surgical physician assistant in 2024

116 Medicare Part D claims for 74 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D. 87 claims were for opioids.

  1. Brian Diller116
  2. Specialty average304

Most prescribed

  1. Oxycodone Hcl72 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): 80.2 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.

  1. Qualityout of 100 · 30% of the final score76.7
  2. Costout of 100 · 30%53.5
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through 2 group practices

  1. Agape Physical Therapy And Sports Rehabilitation LPForest Hill, MD
  2. Medstar Medical Group II LLCBel Air, MD

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Brian M. Diller among 397 surgical physician assistant records in Maryland

Brian M. Diller, PA-C is one of 397 surgical physician assistant records with a practice address in Maryland. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 71% of them.

  • NPI issued2015 · 71% of these records are older, 25% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated2012 · median 2011 among the 230 with a school on file
  • Record last updated2015 · 72% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgical Physician Assistant providers in Maryland

There are 397 surgical physician assistant records in Maryland.

The 8 surgical physician assistant records with the nearest ZIP codes

  1. Moses Agbonavbare, PA-CBaltimore, MD 212181578225439
  2. Penny Baker, PA-CBaltimore, MD 212181386778264
  3. Britni Barnes, PA-CBaltimore, MD 212181780103671
  4. Douglas Crane, PA-CBaltimore, MD 212181750352415
  5. Steven DollBaltimore, MD 212181114026077
  6. Benjamin Horrigan, PA-CBaltimore, MD 212181144506676
  7. Paul Marshall, PA-CBaltimore, MD 212181609527241
  8. Natalie Porcaro, PA-CBaltimore, MD 212181851584932

Common questions

What is Brian M. Diller, PA-C's NPI number?

Brian M. Diller, PA-C's National Provider Identifier (NPI) is 1558746586, issued on Jul 20, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Brian M. Diller, PA-C located?

The NPPES record lists a practice address at 201 E University Pkwy, Baltimore, MD, 21218. Phone: (443) 690-5751. Providers update this record themselves, so call before visiting.

How can I verify Brian M. Diller, PA-C's license?

NPPES lists Maryland license number C0005837, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.

How much does Brian M. Diller, PA-C prescribe under Medicare Part D?

In 2024, Brian M. Diller, PA-C had 116 Medicare Part D claims for 74 beneficiaries; the average among surgical physician assistant prescribers was 304. Part D covers Medicare prescriptions only.

What is Brian M. Diller, PA-C's MIPS final score?

The 2023 MIPS final score is 80.2 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.