Adam Klein, DO
Individual provider Active NPI Infectious Disease Physician · Bethesda, MD
NPI 1245686641 · NPPES record last updated Oct 3, 2025
Key facts
- NPI
- 1245686641
- Entity type
- Individual (NPI type 1)
- Primary specialty
- Infectious Disease Physician 207RI0200X
- License
- H0097291 (MD)
- Practice address
- 8600 Old Georgetown Rd
Bethesda, MD 20814-1422 - Phone
- (301) 896-7500
- NPI assigned
- May 4, 2016
- Sex
- Male
- Sole proprietor
- No
Organizations & group practices 35
Hospital & facility affiliations 4
Medicare Care Compare profile
- Specialty
- Infectious Disease
- Education
- Other, 2016
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
- Medstar Medical Group II LLC
Johns Hopkins Community Physicians, Inc
Practice addresses (Care Compare)
110 Irving St NW
Washington, DC 20010-3017
Phone (202) 877-7000
14207 Park Ctr Dr
Suite 102
Laurel, MD 20707-5255
Phone (301) 604-5254
5255 Loughboro Rd NW
Washington, DC 20016-2633
Phone (202) 537-4000
8600 Old Georgetown Rd
Bethesda, MD 20814-1422
Phone (301) 896-3100
9000 Franklin Square Dr
Baltimore, MD 21237-3901
Phone (443) 777-7000
Hospital & facility affiliations
- Medstar Washington Hospital Center
- Sibley Memorial Hospital
- Suburban Hospital
Merit-based Incentive Payment System (MIPS)
- Final score
- 94.27 of 100
- Quality
- 80.29
- Promoting interoperability
- 100
- Improvement activities
- 40
- Cost
- 75.48
Medicare participation
- Medicare fee-for-service enrollment
- Enrolled (2 enrollments) in DC, MD
- Eligible to order & refer
- Part B services: Yes · DME: Yes · Home health: Yes · Power mobility devices: Yes · Hospice: Yes
Medicare enrollment records
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20220927001346 | DC | Practitioner - Infectious Disease | 3274829643 | Reassigns benefits to 3 organizations |
| I20240327000080 | MD | Practitioner - Infectious Disease | 3274829643 | Reassigns benefits to 3 organizations |
National Provider Directory
- Medicare enrollment (NPD)
- Yes
- Credentials
- Doctor of Osteopathy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| BP10056889 | TX | MD | Internal Medicine Physician |
| 25MB11105300 | NJ | MD | Infectious Disease Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Johns Hopkins Community Physicians, Inc | Internal Medicine | Current | Accepting new patients |
| Medstar Medical Group II LLC | Current |
Accepting new patients | |
| Johns Hopkins Community Physicians, Inc | Current |
Accepting new patients | |
| Medstar Medical Group II LLC | Current |
Accepting new patients | |
| Johns Hopkins Community Physicians | Internal Medicine | Current |
Accepting new patients |
| WHC Emerg Phys | Current |
Accepting new patients | |
| Medstar Medical Group II LLC | Internal Medicine | Current |
Accepting new patients |
| Johns Hopkins Community Physicians, Inc | Internal Medicine | Current |
Accepting new patients |
| WHC Physician Group LLC | Current |
Accepting new patients | |
| Virtua Medical Group, PA | Internal Medicine | Past | Accepting new patients |
Locations
5215 Loughboro Rd NW
Washington, DC 20016
Phone (202) 537-4400
110 Irving St NW
Rm 1A50B
Washington, DC 20010
Phone (202) 877-2568
110 Irving St NW
Washington, DC 20010
Phone (202) 877-2000
1145 19th St NW
Ste 311
Washington, DC 20036
Phone (202) 429-2401
1000 E Eager St
Baltimore, MD 21202
Phone (410) 522-9800
8600 Old Georgetown Rd
Bethesda, MD 20814
Phone (301) 896-2578
3001 S Hanover St
Brooklyn Park, MD 21225
Phone (410) 350-3200
29955 Three Notch Rd
Ste 100
Charlotte Hall, MD 20622
Phone (301) 290-5300
1406 Crain Hwy S
Glen Burnie, MD 21061
Phone (410) 768-6440
14207 Park Center Dr
Ste 102
Laurel, MD 20707
Phone (301) 604-5254
6201 Greenleigh Ave
Middle River, MD 21220
Phone (410) 933-2704
9000 Franklin Square Dr
Rosedale, MD 21237
Phone (410) 682-7000
11355 Pembrooke Sq
Ste 108
Waldorf, MD 20603
Phone (202) 877-6733
Interoperability endpoints
- aklein193187@directvirtua.org
Specialties & licenses
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | BP10056889 | TX | |
| Infectious Disease Physician | 207RI0200X | DO034818 | DC | |
| Infectious Disease Physician | 207RI0200X | 25MB11105300 | NJ | |
| Infectious Disease Physician | 207RI0200X | H0097291 | MD | Yes |
Addresses
Primary practice location
8600 Old Georgetown Rd
Bethesda, MD 20814-1422
Mailing address
6201 Greenleigh Ave
Middle River, MD 21220-2004
Phone (410) 933-0000
Other practice location 1
5215 Loughboro Rd NW
Washington, DC 20016-2618
Phone (202) 660-5182
Other practice location 2
200 Bowman Dr Ste E335
Voorhees, NJ 08043-9640
Phone (856) 247-7545
Other practice location 3
1001 Briggs Rd Ste 250
Mount Laurel, NJ 08054-4111
Phone (856) 866-7466
Electronic endpoints
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | aklein193187@directvirtua.org | ||
| Direct Messaging Address | aklein193187@directvirtua.org |
Other providers in Bethesda, MD
- Jeremy M Klass
- Debra Kanter Klaus
- Hanna Klaus
- Christopher Austin Klebanoff
- James Herman Kleiger
- Ezra Klein
- David Erwin Kleiner Jr.
- Fredric Barry Kleiner
- Deena A Kleinerman
- Julie Klepper
All providers in Bethesda, MD · Infectious Disease Physician in Maryland
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Record last updated by the provider on Oct 3, 2025. Information in NPPES is self-reported and not verified by CMS.
- NUCC Health Care Provider Taxonomy: specialty names.
- Medicare Fee-For-Service Public Provider Enrollment (CMS/PECOS): enrollments, PAC IDs and benefit reassignments.
- Order and Referring (CMS).
- Medicare Care Compare provider data (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.