Mack W. Bell, M.D.
Hospitalist Physician · Baltimore, MD
Mack W. Bell, M.D. is a hospitalist physician with a practice address in Baltimore, Maryland, and NPI 1801359930, issued on Apr 6, 2019. Check the license (Maryland D94657, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Mack W. Bell
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- D94657 MD
Self-reported in NPPES; status is on the state search - Practice location
- 22 S Greene St, Baltimore, MD 21201
- Phone
- (410) 328-7493
- Enumerated
- Apr 6, 2019
- Record last updated
- Oct 17, 2022
- Fax
- (410) 328-3494
- Medicare enrollment
- Enrolled (PECOS I20220902000440); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 397 in Maryland → Look up another NPI →
Also registered at 22 S Greene St
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Verify Mack W. Bell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D94657Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average hospitalist physician in 2024
217 Medicare Part D claims for 95 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Pantoprazole Sodium15 claims
- Amoxicillin-Clavulanate Potass12 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, IncBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mack W. Bell among 397 hospitalist physician records in Maryland
Mack W. Bell, M.D. 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 2019, is newer than 81% of them.
- NPI issued2019 · 81% of these records are older, 13% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated2019 · median 2010 among the 330 with a school on file
- Record last updated2022 · 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
- George Baffoe-Bonnie, M.D.Baltimore, MD 212011780642090
- Lei Jia Chen, MDBaltimore, MD 212011144422049
- Kimberly Clark, PA-CBaltimore, MD 212011144368226
- Philip Dittmar, MDBaltimore, MD 212011932243342
- Kathryn Eshelman, M.D.Baltimore, MD 212011558375147
- Mangla Gulati, M.D.Baltimore, MD 212011740259274
- Cheryl Hepp, MDBaltimore, MD 212011023152444
- Saverio Mirarchi, M.D.Baltimore, MD 212011639124365
Common questions
What is Mack W. Bell, M.D.'s NPI number?
Mack W. Bell, M.D.'s National Provider Identifier (NPI) is 1801359930, issued on Apr 6, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Mack W. Bell, M.D. located?
The NPPES record lists a practice address at 22 S Greene St, Baltimore, MD, 21201. Phone: (410) 328-7493. Providers update this record themselves, so call before visiting.
How can I verify Mack W. Bell, M.D.'s license?
NPPES lists Maryland license number D94657, 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 Mack W. Bell, M.D. prescribe under Medicare Part D?
In 2024, Mack W. Bell, M.D. had 217 Medicare Part D claims for 95 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Mack W. Bell, M.D.'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.