Harold Z. Greenspan, M.D.
Internal Medicine Physician · Chestnut Hill, MA
Harold Z. Greenspan, M.D. is an internal medicine physician with a practice address in Chestnut Hill, Massachusetts, and NPI 1457326076, issued on Feb 17, 2006. Check the license (Massachusetts 71133, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Harold Z. Greenspan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 71133 MA
Self-reported in NPPES; status is on the state search - Practice location
- 291 Independence Dr, Chestnut Hill, MA 02467
- Phone
- (617) 541-6615
- Enumerated
- Feb 17, 2006
- Record last updated
- Nov 16, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (617) 541-6444
- Medicaid ID
- 3047628 MA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 291 Independence Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Harold Z. Greenspan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 71133Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,006 Medicare Part D claims for 313 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium92 claims
- Amlodipine Besylate64 claims
- Lisinopril62 claims
- Metoprolol Succinate52 claims
- Hydrochlorothiazide49 claims
- Losartan Potassium45 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.
Harold Z. Greenspan among 6,825 internal medicine physician records in Massachusetts
Harold Z. Greenspan, M.D. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 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 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2020 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
65 internal medicine physician records list a practice address in Chestnut Hill
They are 65 of the 772 NPPES records with a practice address in Chestnut Hill, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Chestnut Hill → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- George Alliegro, MDChestnut Hill, MA 024671548226293
- Edith Braun, M.D.Chestnut Hill, MA 024671538130422
- Elizabeth Dupuis, M.D.Chestnut Hill, MA 024671255317061
- Thomas Faldetta, M.D.Chestnut Hill, MA 024671740254465
- Karin Hjalmarson, MDChestnut Hill, MA 024671811987225
- Laurie Katzman, MDChestnut Hill, MA 024671881650125
- Lilian Mahrokhian, MDChestnut Hill, MA 024671679568679
- Malina Milan, M.D.Chestnut Hill, MA 024671548257744
Common questions
What is Harold Z. Greenspan, M.D.'s NPI number?
Harold Z. Greenspan, M.D.'s National Provider Identifier (NPI) is 1457326076, issued on Feb 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Harold Z. Greenspan, M.D. located?
The NPPES record lists a practice address at 291 Independence Dr, Chestnut Hill, MA, 02467. Phone: (617) 541-6615. Providers update this record themselves, so call before visiting.
How can I verify Harold Z. Greenspan, M.D.'s license?
NPPES lists Massachusetts license number 71133, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Harold Z. Greenspan, M.D. prescribe under Medicare Part D?
In 2024, Harold Z. Greenspan, M.D. had 1,006 Medicare Part D claims for 313 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.