Haley Kathleen Diamond, APRN
Nurse Practitioner · Annapolis, MD
Haley Kathleen Diamond, APRN is a nurse practitioner with a practice address in Annapolis, Maryland, and NPI 1518632496, issued on Aug 12, 2021. Check the license (Maryland R266473, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Haley Kathleen Diamond
- Credential
- APRN
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- R266473 MD
Self-reported in NPPES; status is on the state search - Practice location
- 2001 Medical Pkwy, Annapolis, MD 21401
- Phone
- (443) 481-1000
- Enumerated
- Aug 12, 2021
- Record last updated
- Nov 10, 2025
- Medicare enrollment
- Enrolled (PECOS I20241021001793); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 2021
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 1,248 in Maryland → Look up another NPI →
Also registered at 2001 Medical Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Haley Kathleen Diamond in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license R266473Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average nurse practitioner in 2024
112 Medicare Part D claims for 60 beneficiaries, against an average of 1,109 among the 54,319 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.
The MIPS final score for 2023 (Medicare payment program): 93.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Luminis Health Medical Group, LLCAnnapolis, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Haley Kathleen Diamond among 1,248 nurse practitioner records in Maryland
Haley Kathleen Diamond, APRN is one of 1,248 nurse practitioner records with a practice address in Maryland. 68% 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 71% of them.
- NPI issued2021 · 71% of these records are older, 24% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2021 · median 2018 among the 655 with a school on file
- Record last updated2025 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
46 nurse practitioner records list a practice address in Annapolis
They are 46 of the 3,629 NPPES records with a practice address in Annapolis, and 1,248 nurse practitioner records in Maryland.
All 1,248 in Maryland → Every provider in Annapolis → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Kathleen Barrett, CRNPAnnapolis, MD 214011265501746
- Janet Benton, NPAnnapolis, MD 214011114039161
- Wynn Boyle, CRNPAnnapolis, MD 214011235298654
- Helen Brown, CRNPAnnapolis, MD 214011891808176
- Mary Bryant McGurin, CRNPAnnapolis, MD 214011063471365
- Wenda Collien, CRNPAnnapolis, MD 214011497823744
- Elizabeth Connelly, NPAnnapolis, MD 214011407992407
- Jane Corner, CRNPAnnapolis, MD 214011922112275
Common questions
What is Haley Kathleen Diamond, APRN's NPI number?
Haley Kathleen Diamond, APRN's National Provider Identifier (NPI) is 1518632496, issued on Aug 12, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Haley Kathleen Diamond, APRN located?
The NPPES record lists a practice address at 2001 Medical Pkwy, Annapolis, MD, 21401. Phone: (443) 481-1000. Providers update this record themselves, so call before visiting.
How can I verify Haley Kathleen Diamond, APRN's license?
NPPES lists Maryland license number R266473, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Haley Kathleen Diamond, APRN prescribe under Medicare Part D?
In 2024, Haley Kathleen Diamond, APRN had 112 Medicare Part D claims for 60 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Haley Kathleen Diamond, APRN's MIPS final score?
The 2023 MIPS final score is 93.3 of 100. 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.