Zachary John Milstone, MD/PHD
Internal Medicine Physician · Baltimore, MD
Zachary John Milstone, MD/PHD is an internal medicine physician with a practice address in Baltimore, Maryland, and NPI 1104406487, issued on Apr 12, 2021. Check the license on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Zachary John Milstone
- Credential
- MD/PHD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 1016634 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1800 Orleans St, Baltimore, MD 21287
- Phone
- (410) 502-2037
- Enumerated
- Apr 12, 2021
- Record last updated
- Feb 9, 2026
- Fax
- (410) 955-0737
- Entity
- Type 1 · individual
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Verify Zachary John Milstone in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of PhysiciansCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
19 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Zachary John Milstone among 3,904 internal medicine physician records in Maryland
Zachary John Milstone, MD/PHD is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 92% of them.
- NPI issued2021 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,278 internal medicine physician records list a practice address in Baltimore
They are 1,278 of the 35,183 NPPES records with a practice address in Baltimore, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Baltimore → Internal Medicine Physician nationwide →
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Common questions
What is Zachary John Milstone, MD/PHD's NPI number?
Zachary John Milstone, MD/PHD's National Provider Identifier (NPI) is 1104406487, issued on Apr 12, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Zachary John Milstone, MD/PHD located?
The NPPES record lists a practice address at 1800 Orleans St, Baltimore, MD, 21287. Phone: (410) 502-2037. Providers update this record themselves, so call before visiting.
How can I verify Zachary John Milstone, MD/PHD's license?
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 Zachary John Milstone, MD/PHD prescribe under Medicare Part D?
In 2024, Zachary John Milstone, MD/PHD had 19 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.