Allison Marie Diem, CRNP
Family Nurse Practitioner · Bel Air, MD
Allison Marie Diem, CRNP is a family nurse practitioner with a practice address in Bel Air, Maryland, and NPI 1699901538, issued on Jun 5, 2009. Check the license (Maryland R173526, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Allison Marie Diem
- Credential
- CRNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- R173526 MD
Self-reported in NPPES; status is on the state search - Practice location
- 615 W Macphail RD, Bel Air, MD 21014
- Phone
- (410) 638-8900
- Enumerated
- Jun 5, 2009
- Record last updated
- May 27, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 615 W Macphail RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Robert Duncan, M.D.Sports Medicine (Family Medicine) Physician1255337416
- David Dunn, M.D.Internal Medicine Physician1700881315
Verify Allison Marie Diem in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license R173526Check 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 family nurse practitioner in 2024
13 Medicare Part D claims for 12 beneficiaries, against an average of 1,305 among the 140,557 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.
65 family nurse practitioner records list a practice address in Bel Air
They are 65 of the 1,945 NPPES records with a practice address in Bel Air, and 4,124 family nurse practitioner records in Maryland.
All 65 in Bel Air → All 4,124 in Maryland → Every provider in Bel Air →
Other family nurse practitioner records in Maryland
- Kanisha AaronOwings Mills, MD1518565324
- Nicole Aaron, CRNPQueenstown, MD1538916093
- Naomi Abaga, CRNPBaltimore, MD1871054494
- Kyerewaa Abban-Thompson, NPSilver Spring, MD1144513151
- Kristen Abbott, CRNPBerlin, MD1700597382
- Mark Abbott, FNPElkridge, MD1013452549
- Nabila Abdulwahab, CRNPBowie, MD1629341375
- Leila Abedi, CRNP-FGaithersburg, MD1699091603
- Hayat Aberra, NP-CEdgewater, MD1295275774
- Pamela Abina, CRNPColumbia, MD1154709335
Common questions
What is Allison Marie Diem, CRNP's NPI number?
Allison Marie Diem, CRNP's National Provider Identifier (NPI) is 1699901538, issued on Jun 5, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Allison Marie Diem, CRNP located?
The NPPES record lists a practice address at 615 W Macphail RD, Bel Air, MD, 21014. Phone: (410) 638-8900. Providers update this record themselves, so call before visiting.
How can I verify Allison Marie Diem, CRNP's license?
NPPES lists Maryland license number R173526, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Allison Marie Diem, CRNP prescribe under Medicare Part D?
In 2024, Allison Marie Diem, CRNP had 13 Medicare Part D claims for 12 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.