Adam Klein, DO
Infectious Disease Physician · Bethesda, MD
Adam Klein, DO is an infectious disease physician with a practice address in Bethesda, Maryland, and NPI 1245686641, issued on May 4, 2016. Check the license (Maryland H0097291, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Adam Klein
- Credential
- DO
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- H0097291 MD
DO034818 DC
25MB11105300 NJ
BP10056889 TX
Self-reported in NPPES; status is on the state search - Practice location
- 8600 Old Georgetown RD, Bethesda, MD 20814
- Phone
- (301) 896-7500
- Enumerated
- May 4, 2016
- Record last updated
- Oct 3, 2025
- Medicare enrollment
- Enrolled (PECOS I20220927001346); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 410 in Maryland → Look up another NPI →
Also registered at 8600 Old Georgetown RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Richard Alcorta, MDEmergency Medicine Physician1720023203
- Sara Alehashemi, MDInternal Medicine Physician1134409287
Verify Adam Klein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license H0097291Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average infectious disease physician in 2024
313 Medicare Part D claims for 63 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 60% of claims.
Most prescribed
- Biktarvy93 claims
- Genvoya26 claims
- Darunavir18 claims
- Doxycycline Monohydrate14 claims
- Vemlidy13 claims
- Atorvastatin Calcium12 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): 96 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 2 group practices
- Johns Hopkins Community Physicians, IncLaurel, MD
- Medstar Medical Group II LLCWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Adam Klein among 410 infectious disease physician records in Maryland
Adam Klein, DO is one of 410 infectious disease physician records with a practice address in Maryland. 59% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 89% of them.
- NPI issued2016 · 89% of these records are older, 9% newer
- In a Medicare fileYes · 59% of these records are
- In the CMS Doctors and Clinicians fileYes · 49% of these records are
- Graduated2016 · median 2002 among the 202 with a school on file
- Record last updated2025 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
84 infectious disease physician records list a practice address in Bethesda
They are 84 of the 7,245 NPPES records with a practice address in Bethesda, and 410 infectious disease physician records in Maryland.
All 410 in Maryland → Every provider in Bethesda → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Jason Bennett, M.D., M.S.P.H.Bethesda, MD 208141396710562
- Margaret Calloway, M.D.Bethesda, MD 208141881677888
- Jesse Goodman, M.D., M.P.H.Bethesda, MD 208141457415366
- Ann Labriola, MDBethesda, MD 208141841393105
- Joshua Lacsina, M.D., PH.D.Bethesda, MD 208141760758767
- Anil Panackal, M.D., S.M., FACPBethesda, MD 208141629004817
- Julia Zemskova, MDBethesda, MD 208141093278657
- Michael Johnson, MDChevy Chase, MD 208151700385812
Common questions
What is Adam Klein, DO's NPI number?
Adam Klein, DO's National Provider Identifier (NPI) is 1245686641, issued on May 4, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Adam Klein, DO located?
The NPPES record lists a practice address at 8600 Old Georgetown RD, Bethesda, MD, 20814. Phone: (301) 896-7500. Providers update this record themselves, so call before visiting.
How can I verify Adam Klein, DO's license?
NPPES lists Maryland license number H0097291, 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 Adam Klein, DO prescribe under Medicare Part D?
In 2024, Adam Klein, DO had 313 Medicare Part D claims for 63 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Adam Klein, DO's MIPS final score?
The 2023 MIPS final score is 96 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.