Michael Alan Horberg, MD
Internal Medicine Physician · Rockville, MD
Michael Alan Horberg, MD is an internal medicine physician with a practice address in Rockville, Maryland, and NPI 1629157763, issued on Nov 2, 2006. Check the license (Maryland D0072684, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Michael Alan Horberg
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- D0072684 MD
G83494 CA
MD039528 DC
0101250271 VA
Self-reported in NPPES; status is on the state search - Practice location
- 2101 E Jefferson St, Rockville, MD 20852
- Phone
- (301) 816-2424
- Enumerated
- Nov 2, 2006
- Record last updated
- May 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00G834940 CA
- Medicare enrollment
- Enrolled (PECOS I20130824000212); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 1985
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 2101 E Jefferson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Alan Horberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0072684Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
357 Medicare Part D claims for 46 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 51% of claims.
Most prescribed
- Biktarvy64 claims
- Triumeq30 claims
- Genvoya20 claims
- Juluca20 claims
- Atorvastatin Calcium19 claims
- Efavirenz-Emtric-Tenofov Disop15 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.
Bills Medicare through one group practice
- Kaiser Foundation Health Plan OF The Mid Atlantic States, IncLargo, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Alan Horberg among 3,904 internal medicine physician records in Maryland
Michael Alan Horberg, MD 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1985 · median 2003 among the 2,445 with a school on file
- Record last updated2021 · 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).
179 internal medicine physician records list a practice address in Rockville
They are 179 of the 14,353 NPPES records with a practice address in Rockville, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Rockville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jan Bachowski, M.D.Rockville, MD 208521225092455
- Laura Brown, MDRockville, MD 208521255399234
- Kajal Dasgupta, M.D.Rockville, MD 208521003882150
- Elliot Goldstein, MDRockville, MD 208521619935665
- Alpana Goswami, MDRockville, MD 208521346297918
- Lalit Gupta, M.D.Rockville, MD 208521306844592
- Matthew Kramp, DORockville, MD 208521073540712
- Hing-Chung Lee, MDRockville, MD 208521740248335
Common questions
What is Michael Alan Horberg, MD's NPI number?
Michael Alan Horberg, MD's National Provider Identifier (NPI) is 1629157763, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Alan Horberg, MD located?
The NPPES record lists a practice address at 2101 E Jefferson St, Rockville, MD, 20852. Phone: (301) 816-2424. Providers update this record themselves, so call before visiting.
How can I verify Michael Alan Horberg, MD's license?
NPPES lists Maryland license number D0072684, 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 Michael Alan Horberg, MD prescribe under Medicare Part D?
In 2024, Michael Alan Horberg, MD had 357 Medicare Part D claims for 46 beneficiaries; 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.