Mark M. Chou, PA-C
Hospitalist Physician · Baltimore, MD
Mark M. Chou, PA-C is a hospitalist physician with a practice address in Baltimore, Maryland, and NPI 1710216866, issued on Dec 21, 2009. Check the license (Maryland C04112, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Mark M. Chou
- Credential
- PA-C
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- C04112 MD
Self-reported in NPPES; status is on the state search - Practice location
- 900 S Caton Ave, Baltimore, MD 21229
- Phone
- (410) 368-2000
- Enumerated
- Dec 21, 2009
- Record last updated
- Jan 11, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (410) 368-2009
- Medicare enrollment
- Enrolled (PECOS I20150624002726); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 397 in Maryland → Look up another NPI →
Also registered at 900 S Caton Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark M. Chou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license C04112Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average hospitalist physician in 2024
151 Medicare Part D claims for 71 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 19 claims were for opioids.
Most prescribed
- Oxycodone Hcl11 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): 86.8 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
- Johns Hopkins Community Physicians, IncLaurel, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark M. Chou among 397 hospitalist physician records in Maryland
Mark M. Chou, PA-C is one of 397 hospitalist physician records with a practice address in Maryland. 91% 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 36% of them.
- NPI issued2009 · 36% of these records are older, 60% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated2009 · median 2010 among the 330 with a school on file
- Record last updated2018 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Maryland
There are 397 hospitalist physician records in Maryland.
All 397 in Maryland → Every provider in Baltimore → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Martha Baker, M.D.Baltimore, MD 212291992094189
- Ammer Bekele, MDBaltimore, MD 212291295794626
- Karl Quist-Therson, MDBaltimore, MD 212291194786608
- Vuk Sekicki, M.D.Baltimore, MD 212291114210424
- Lakpa Diku Sherpa, MDBaltimore, MD 212291396094983
- Bikram Shrestha, M.D.Baltimore, MD 212291679913008
- Lynn Tao, MDBaltimore, MD 212291801856869
- Adetinuke Boyd, M.D.Baltimore, MD 212301811192677
Common questions
What is Mark M. Chou, PA-C's NPI number?
Mark M. Chou, PA-C's National Provider Identifier (NPI) is 1710216866, issued on Dec 21, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mark M. Chou, PA-C located?
The NPPES record lists a practice address at 900 S Caton Ave, Baltimore, MD, 21229. Phone: (410) 368-2000. Providers update this record themselves, so call before visiting.
How can I verify Mark M. Chou, PA-C's license?
NPPES lists Maryland license number C04112, 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 Mark M. Chou, PA-C prescribe under Medicare Part D?
In 2024, Mark M. Chou, PA-C had 151 Medicare Part D claims for 71 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Mark M. Chou, PA-C's MIPS final score?
The 2023 MIPS final score is 86.8 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.