NPPES file of Aug 9, 2026

Ryan M. Zimmerman, M.D.

Orthopaedic Surgery Physician · Lutherville, MD

Ryan M. Zimmerman, M.D. is an orthopaedic surgery physician with a practice address in Lutherville, Maryland, and NPI 1164659645, issued on Jun 11, 2009. Check the license (Maryland D0079107, as entered in NPPES) on the Maryland Board of Physicians; 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
1164659645
Name
Ryan M. Zimmerman
Credential
M.D.
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License number
D0079107 MD
Self-reported in NPPES; status is on the state search
Practice location
1400 Front Ave, Lutherville, MD 21093
Phone
(410) 296-6232
Enumerated
Jun 11, 2009
Record last updated
Sep 12, 2023
Fax
(410) 821-5943
Medicare enrollment
Enrolled (PECOS I20150722003621); accepts Medicare assignment
Medical or professional school
Johns Hopkins University School Of Medicine, 2009
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 1400 Front Ave

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

  1. Romina Astifidis, PTHand Physical Therapist1780747725
  2. Susan Burke, OT CHTHand Occupational Therapist1760537435
  3. Christopher Forthman, M.D.Orthopaedic Hand Surgery Physician1124059779
  4. Peter Innis, M.D.Orthopaedic Hand Surgery Physician1730142464
  5. Jacen Martinez, P.A.Physician Assistant1568560472
  6. John Moore, M.D.Orthopaedic Hand Surgery Physician1487688347

Verify Ryan M. Zimmerman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaryland Board of Physicians
    Search for license D0079107
    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
Open the Maryland license search

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59% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024

141 Medicare Part D claims for 102 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 60 claims were for opioids.

  1. Ryan Zimmerman141
  2. Specialty average346

Most prescribed

  1. Oxycodone-Acetaminophen39 claims
  2. Methylprednisolone36 claims
  3. Amoxicillin14 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 MIPS final score for 2023 (Medicare payment program): 0 of 100

The Merit-based Incentive Payment System score is reported for this clinician. 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 score0.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

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

Industry payments in 2024: $678.82

7 payments; by number, the most common kind was food and beverage; the largest payer was Medical Device Business Services, Inc. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Ryan Zimmerman$679
  2. Specialty average$23,023

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 3 group practices

  1. Agape Physical Therapy And Sports Rehabilitation LPForest Hill, MD
  2. Greater Chesapeake Hand Specialists, P.A.Lutherville, MD
  3. Medstar Medical Group II LLCGlen Burnie, MD

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

Ryan M. Zimmerman among 457 orthopaedic surgery physician records in Maryland

Ryan M. Zimmerman, M.D. is one of 457 orthopaedic surgery physician records with a practice address in Maryland. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 69% of them.

  • NPI issued2009 · 69% of these records are older, 27% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2009 · median 2002 among the 299 with a school on file
  • Record last updated2023 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in Maryland

There are 457 orthopaedic surgery physician records in Maryland.

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Gurminder Ahuja, MDTimonium, MD 210931235207655
  2. Michael Ain, M.D.Lutherville, MD 210931629032917
  3. Andrew Cosgarea, M.D.Lutherville, MD 210931780631861
  4. Carl Johnson, M.D.Lutherville Timonium, MD 210931821039108
  5. Kristin Karim, MDTimonium, MD 210931811309131
  6. Emery Kim, MDLutherville, MD 210931720077514
  7. Edward McFarland, M.D.Lutherville, MD 210931467401018
  8. Lee Riley, M.D.Lutherville, MD 210931588606628

Common questions

What is Ryan M. Zimmerman, M.D.'s NPI number?

Ryan M. Zimmerman, M.D.'s National Provider Identifier (NPI) is 1164659645, issued on Jun 11, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Ryan M. Zimmerman, M.D. located?

The NPPES record lists a practice address at 1400 Front Ave, Lutherville, MD, 21093. Phone: (410) 296-6232. Providers update this record themselves, so call before visiting.

How can I verify Ryan M. Zimmerman, M.D.'s license?

NPPES lists Maryland license number D0079107, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Ryan M. Zimmerman, M.D. prescribe under Medicare Part D?

In 2024, Ryan M. Zimmerman, M.D. had 141 Medicare Part D claims for 102 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.

What is Ryan M. Zimmerman, M.D.'s MIPS final score?

The 2023 MIPS final score is 0 of 100. 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.