Dr. Harold Z. Greenspan, MD
- Medicare services, 2023
- 2,393
- Part D claims, 2024
- 1,006
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 800 Washington Street, Boston, MA 02111
- Practice phone
- Call (617) 636-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Greenspan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Harold Z. Greenspan is an internist in Boston, Massachusetts
Dr. Greenspan practices at Tufts Medical Center in Boston, Massachusetts, part of Tufts Medicine.
Dr. Greenspan's NPI, 1457326076, was assigned on February 17, 2006. Dr. Greenspan graduated from University of Vermont College of Medicine in 1985. Dr. Greenspan holds Massachusetts license 71133.
- NPI
- 1457326076NPI Registry (opens in a new tab)
- NPI enumeration date
- February 17, 2006
- NPI status
- Active
- Practice phone
- (617) 636-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Harold Z. Greenspan practices at Tufts Medical Center in Boston, Massachusetts
Dr. Greenspan's primary practice is Tufts Medical Center, at 800 Washington Street, Boston, MA 02111 in Suffolk County. The practice phone is (617) 636-5000.
- Tufts Medical Center800 Washington Street, Boston, MA 02111 · Suffolk CountyPhone(617) 636-5000
Source: Dmand AI Affiliation Data
Dr. Harold Z. Greenspan is affiliated with 3 sites of care and 1 medical group
Dr. Greenspan's primary practice is Tufts Medical Center in Boston, Massachusetts, part of Tufts Medicine. The medical group on file is Atrius Health. Dmand AI also links Dr. Greenspan to 1 more group practice or clinic and 1 imaging center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Harold Z. Greenspan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Greenspan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Tufts Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Tufts Medicine and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Harold Z. Greenspan is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Greenspan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Greenspan is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Greenspan
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Harold Z. Greenspan billed Medicare for 2,393 services in 2023
CMS data shows 2,393 Medicare services from Dr. Greenspan across 39 procedure codes in 2023. Medicare paid $41,465 for them. Every service was in an office.
Dr. Greenspan's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Lab and pathology
- 2022: 1,7902023: 1,54814%
- Surgery
- 2022: 4722023: 39516%
- Office and hospital visits
- 2022: 3792023: 34210%
- Other services
- 2022: 1772023: 8453%
- Tests and treatments
- 2022: 462023: 2448%
Dr. Greenspan compared with the Massachusetts median for internists, 2023
- Dr. Greenspan
- Massachusetts median
- Medicare services
- 2,393vs 4315.6 times
- Part D claims
- 725vs 40280% above
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Greenspan's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Greenspan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Greenspan and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Harold Z. Greenspan's patients have a median age of 67
Across all payers, Dmand AI patient panel data puts Dr. Greenspan's median patient age at 67, with 36% women.
Dr. Greenspan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women36%
- Men63%
Source: Dmand AI Patient Panel Data
Dr. Harold Z. Greenspan wrote 1,006 Medicare Part D claims in 2024
In 2024, Dr. Greenspan wrote 1,006 Medicare Part D claims for 313 patients. 91% of them were for generic drugs. CMS names the drug for 725 of them, across 24 drugs with 11 or more claims each, at $38,393 in total drug cost. In 2023, CMS named 5,383 claims across 90 drugs.
Dr. Greenspan's Part D claims by kind of drug, 2024
- Generic912 claims91%
- Brand-name and other94 claims9%
Dr. Greenspan's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5,3832024: 72587%
Drugs named by CMS: 24 in 2024, 90 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Harold Z. Greenspan graduated from University of Vermont College of Medicine
Dr. Greenspan graduated from University of Vermont College of Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Harold Z. Greenspan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Harold Z. Greenspan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Harold Z. Greenspan's NPI number?
Dr. Harold Z. Greenspan's NPI number is 1457326076. It was assigned on February 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Harold Z. Greenspan?
Dr. Harold Z. Greenspan is an internist in Boston, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Harold Z. Greenspan practice?
Dr. Greenspan practices at 800 Washington Street, Boston, MA 02111. Dr. Greenspan's primary practice is Tufts Medical Center in Boston, Massachusetts, part of Tufts Medicine. Dmand AI also links Dr. Greenspan to 1 group practice or clinic and 1 imaging center.
What is Dr. Harold Z. Greenspan's office phone number?
The practice phone on file for Dr. Greenspan is (617) 636-5000.
What is Dr. Harold Z. Greenspan's medical license number?
Dr. Greenspan holds Massachusetts license 71133.
Which hospitals is Dr. Harold Z. Greenspan affiliated with?
Dr. Greenspan practices at Tufts Medical Center in Boston, Massachusetts.
What medical group is Dr. Harold Z. Greenspan part of?
Dr. Greenspan is linked to Atrius Health.
Does Dr. Harold Z. Greenspan accept Medicare?
Yes. CMS data shows Dr. Greenspan billed Medicare for 2,393 services in 2023.
What services does Dr. Harold Z. Greenspan bill to Medicare?
In 2023, Dr. Greenspan's most billed Medicare services were surgery: heart and blood vessels (36415), office visit, established patient (99214) and lab and pathology test (80061).
Where did Dr. Harold Z. Greenspan go to medical school?
Dr. Greenspan graduated from University of Vermont College of Medicine in 1985.
What drugs does Dr. Harold Z. Greenspan prescribe most?
In 2024 Medicare Part D data, Dr. Greenspan's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril.
How long has Dr. Harold Z. Greenspan been practicing?
Dr. Greenspan graduated from medical school in 1985, 41 years ago.
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