Mary Alexandra Cook, MD
Hematology & Oncology Physician · Bel Air, MD
Mary Alexandra Cook, MD is a hematology & oncology physician with a practice address in Bel Air, Maryland, and NPI 1639600620, issued on Mar 22, 2017. Check the license (Maryland D97420, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Mary Alexandra Cook
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- D97420 MD
Self-reported in NPPES; status is on the state search - Practice location
- 500 Upper Chesapeake Dr, Bel Air, MD 21014
- Phone
- (443) 643-3010
- Enumerated
- Mar 22, 2017
- Record last updated
- Aug 23, 2023
- Medicare enrollment
- Enrolled (PECOS I20230907004171); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 317 in Maryland → Look up another NPI →
Also registered at 500 Upper Chesapeake Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michelle Abramowski, CRNPAdult Health Nurse Practitioner1598954463
- Anna Adamson, MDHospice and Palliative Medicine (Internal Medicine) Physician1316280720
- Titilayo Adetu, MDFamily Medicine Physician1053479204
- Christina AgronRegistered Nurse1336985225
- Ekunola Alade, MDInternal Medicine Physician1750556288
- Olusumbo AladeMedical Physician Assistant1417484965
Verify Mary Alexandra Cook in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D97420Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
286 Medicare Part D claims for 67 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
Most prescribed
- Anastrozole59 claims
- Ondansetron Hcl36 claims
- Prochlorperazine Maleate35 claims
- Eliquis22 claims
- Dexamethasone20 claims
- Pantoprazole Sodium20 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): 80.4 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).
Industry payments in 2024: $102.21
4 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Agape Physical Therapy And Sports Rehabilitation LPForest Hill, MD
- Upper Chesapeake Hematology And Oncology Services, LLCBel Air, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Alexandra Cook among 317 hematology & oncology physician records in Maryland
Mary Alexandra Cook, MD is one of 317 hematology & oncology physician records with a practice address in Maryland. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 89% of them.
- NPI issued2017 · 89% of these records are older, 9% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2017 · median 2000 among the 185 with a school on file
- Record last updated2023 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Maryland
There are 317 hematology & oncology physician records in Maryland.
All 317 in Maryland → Every provider in Bel Air → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Muhammad Khawaja, MD, MPHBel Air, MD 210141871724153
- Lillian Man, MDBel Air, MD 210141780028985
- Nataliya Melnyk, M.DBel Air, MD 210141023306065
- Bhuwan Poudyal, MDBel Air, MD 210141528311891
- Julie Woods, MDBel Air, MD 210141316170426
- Andrew Mener, M.D.Columbia, MD 210441891084513
- Tejaswi Sastry, M.D.Columbia, MD 210441013005685
- Matthew Williams, MDColumbia, MD 210441063040681
Common questions
What is Mary Alexandra Cook, MD's NPI number?
Mary Alexandra Cook, MD's National Provider Identifier (NPI) is 1639600620, issued on Mar 22, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Mary Alexandra Cook, MD located?
The NPPES record lists a practice address at 500 Upper Chesapeake Dr, Bel Air, MD, 21014. Phone: (443) 643-3010. Providers update this record themselves, so call before visiting.
How can I verify Mary Alexandra Cook, MD's license?
NPPES lists Maryland license number D97420, 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 Mary Alexandra Cook, MD prescribe under Medicare Part D?
In 2024, Mary Alexandra Cook, MD had 286 Medicare Part D claims for 67 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Mary Alexandra Cook, MD's MIPS final score?
The 2023 MIPS final score is 80.4 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.