Haley Kathleen Diamond , APRN
Nurse Practitioner โข Annapolis, MD
2001 Medical Pkwy
Annapolis, MD 214013773
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on August 12, 2021; this date does not establish years in practice.
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Published CMS data list 336 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99233 โ Subsequent hospital care with moderate levelof medical decision making: 160 service units.
- 99232 โ Subsequent hospital care with moderate levelof medical decision making: 70 service units.
- 99239 โ Hospital discharge day management: 61 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 4 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 14 Medicare Part D prescriptions, including refills, in 2022.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2022. Published rows only; this is not a quality measure.
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Published Part D records, 2022:
- Cefuroxime (Cefuroxime Axetil) โ 14 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2022. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table ยท Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Nurse Practitioner in Annapolis, MD (2024, 22 clinicians with data). Median for this group: 391. Middle half: 150 to 574.
Close to the middle for Medicare Part B services among clinicians listed under Nurse Practitioner in Maryland (2024, 499 clinicians with data). Median for this group: 392. Middle half: 149 to 946.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 73 in 2022 to 336 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022โ2024.
Practice Location & Contact Primary Location
2001 Medical Pkwy
Annapolis, MD 214013773
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Luminis Health Medical Group, Llc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Yale University School Of Medicine
2021
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
139 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $30,371 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $24,015 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
14 standardized 30-day fills in 2022
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$136 in 2022
The total cost of these prescriptions in 2022, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2022.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021โ2025.
Years since graduation
5 years (graduated 2021)
CMS Doctors and Clinicians data list 2021 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2021
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Haley Diamond has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Haley Diamond as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Annapolis and Maryland
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Nurse Practitioner in Annapolis, MD (2024, 22 clinicians with data). Median for this group: 391. Middle half: 150 to 574.
Close to the middle for clinicians listed under Nurse Practitioner in Maryland (2024, 499 clinicians with data). Median for this group: 392. Middle half: 149 to 946.
Medicare-allowed amount
Close to the middle for clinicians listed under Nurse Practitioner in Annapolis, MD (2024, 22 clinicians with data). Median for this group: $29,132. Middle half: $12,101 to $60,635.
Close to the middle for clinicians listed under Nurse Practitioner in Maryland (2024, 499 clinicians with data). Median for this group: $31,561. Middle half: $12,296 to $68,157.
Paid by Medicare
Close to the middle for clinicians listed under Nurse Practitioner in Annapolis, MD (2024, 22 clinicians with data). Median for this group: $22,184. Middle half: $9,433 to $43,545.
Close to the middle for clinicians listed under Nurse Practitioner in Maryland (2024, 499 clinicians with data). Median for this group: $24,015. Middle half: $9,491 to $51,591.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Haley Diamond are from 2022.
46 active clinicians are listed under Nurse Practitioner with a practice address in Annapolis, MD (1,248 in Maryland).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Annapolis
19.6% of these 46 clinicians have the CMS telehealth indicator.
52.2% of these 46 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 360% from 73 in 2022 to 336 in 2024.
- 2022: 73
- 2023: 364
- 2024: 336
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Medicare-allowed amount
Medicare-allowed amount increased 471% from $5,317 in 2022 to $30,371 in 2024.
- 2022: $5,317
- 2023: $30,351
- 2024: $30,371
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Paid by Medicare
Paid by Medicare increased 457% from $4,308 in 2022 to $24,015 in 2024.
- 2022: $4,308
- 2023: $24,070
- 2024: $24,015
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Medicare Part D prescriptions
CMS data for Part D prescriptions are available for 2022 only.
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30-day fills
CMS data for 30-day fills are available for 2022 only.
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Part D drug cost
CMS data for Part D drug cost are available for 2022 only.
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2022), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2021โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2022โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
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160 | 94 | $226.05 | $107.31 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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70 | 46 | $167.21 | $71.35 |
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99239
Hospital discharge day management, more than 30 minutes
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61 | 61 | $229.16 | $101.63 |
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99231
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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45 | 13 | $101.00 | $44.60 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2022.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Cefuroxime | Cefuroxime Axetil | 14 | 54 | $136.32 | 12 |
Source: CMS Part D by Provider and Drug, 2022; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-11-10NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20241021001793
MD
8325443476
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Luminis Health Medical Group, Llc
2001 Medical Pkwy, Annapolis, MD 214013280
Phone: 4434811000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Geriatric Medicine
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Hospitalist
Doctor of Medicine (M.D.)
Internal Medicine - Infectious Disease
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 2001 MEDICAL PKWY, ANNAPOLIS, MD 214013773 (Tel: 4434811000)
Registered at 19 BRISTOL DR, ANNAPOLIS, MD 214012208 (Tel: 4434811000)
Recorded as HALEY DIAMOND, APRN
Nurse Practitioner (license number reported to NPPES: MD R266473)
NPI status registered as active in NPPES database
Registered at 20 YORK ST, NEW HAVEN, CT 065103220 (Tel: 2036884242)
Registered at 286 HUMPHREY ST APT 1, NEW HAVEN, CT 065113935
Recorded as HALEY DENNIS, APRN
Nurse Practitioner (license number reported to NPPES: CT 9864)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Annapolis
- Marianne Eggerl, WHNP-BC
- Beth Palmer, CRNP
- Stephanie Zwonitzer, CRNP
- Debra Smith, CRNP
- Octavia Yancey, CRNP
- Jane Corner, CRNP
Mailing Address
19 Bristol Dr
Annapolis, MD 214012208
Phone: 4434811000