NPI registry status
Active
2026 NPPES data Anesthesiology Physician NPI 1164406419 M.D.
Verify on CMS → Geoffrey Hart, M.D.
Anesthesiology Physician in Boston, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 56,432 in Anesthesiology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
394
Medicare Part D claims · 14 beneficiaries · Anesthesiology Physician avg: 860
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Geoffrey Hart, M.D. filed 394 Medicare Part D claims in 2023 as a Anesthesiology Physician in Boston, Massachusetts, prescribing 95% generic.
- 394
- Part D claims, 2023
- 95%
- generic prescribing
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Geoffrey Hart, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
394 Top 43% higher than 57% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Geoffrey Hart, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Geoffrey Hart, M.D.?
Quality data not reportedPrimary specialty
Anesthesiology Physician
Medicare Part D claims
394 54% vs specialty avg
Specialty distribution in Massachusetts
How Anesthesiology Physician compares to other specialties among Massachusetts providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Anesthesiology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Geoffrey Hart, M.D. appears in the CMS NPPES registry as an Anesthesiology Physician provider holding M.D. credentials at 50 STANIFORD ST, Boston, MA, 02114, with a listed phone of (781) 341-3966. NPI 1164406419 was issued on 11/30/2005.
Medicare Part D records for calendar year 2023 show 394 prescription claims written by this provider, covering 14 Medicare beneficiaries and totaling roughly $39K in drug spend, split 5% brand-name and 95% generic by claim count.
Anesthesiology Physician is a high-volume specialty nationwide, with 56,432 enrolled providers across 56 states and an average of 860 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1164406419 |
|---|---|
| Specialty | Anesthesiology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 11/30/2005 |
License & disciplinary context - Massachusetts BORIM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Geoffrey Hart, M.D.. To verify Geoffrey Hart, M.D.'s current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Geoffrey Hart, M.D. - brand share 5.0%
Anesthesiology Physician average
5% brand-name claims vs 95% generic, on 394 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
394
Total Claims
$39K
Total Drug Cost
14
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 395
- Total Day Supply
- 10,364
- Brand vs Generic
- 5% brand / 95% generic
- Brand Drug Cost
- $16K
- Generic Drug Cost
- $23K
Patient Demographics
- Average Patient Age
- 54.9 years
- Avg HCC Risk Score
- 1.11
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Geoffrey Hart, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Dextroamphetamine-…
Dextroamphetamine-Amphetamine
64 claims
- Buprenorphine-Nalo…
Buprenorphine-Naloxone
48 claims
- Buprenorphine Hcl
Buprenorphine Hcl
39 claims
- Gabapentin
Gabapentin
39 claims
- Clonazepam
Clonazepam
35 claims
- Clonidine Hcl 21
Clonidine Hcl
21 claims
- Alprazolam 18
Alprazolam
18 claims
- Duloxetine Hcl 16
Duloxetine Hcl
16 claims
| Drug | Claims |
|---|---|
| Dextroamphetamine-Amphetamine Dextroamphetamine/Amphetamine | 64 |
| Buprenorphine-Naloxone Buprenorphine Hcl/Naloxone Hcl | 48 |
| Buprenorphine Hcl | 39 |
| Gabapentin | 39 |
| Clonazepam | 35 |
| Clonidine Hcl | 21 |
| Alprazolam | 18 |
| Duloxetine Hcl | 16 |
| Ondansetron Hcl | 16 |
| Celecoxib | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Anesthesiology Physician Overview
How Geoffrey Hart, M.D. fits within the Anesthesiology Physician landscape nationally.
56,432
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider
Geoffrey Hart, M.D.'s 394 claims are below the specialty average of 860.
Nearby Anesthesiology Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Hart.
Dr. John Abadir
M.D
Boston, MA
Matthew Abadir
Boston, MA
Dr. Sarah Abbett
M.D.
Boston, MA
Dr. Brendan Abbott
DO
Brighton, MA
Dr. Timothy Abbott
D.O.
Northampton, MA
Compare Anesthesiology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Massachusetts medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Anesthesiology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Geoffrey Hart, M.D.'s specialty? ▼
Geoffrey Hart, M.D. specializes in Anesthesiology Physician and practices in Boston, Massachusetts. Credentials: M.D..
How much does Geoffrey Hart, M.D. prescribe under Medicare Part D? ▼
In 2023, Geoffrey Hart, M.D. wrote 394 Medicare Part D claims totaling $39K in drug costs for 14 beneficiaries.
Where is Geoffrey Hart, M.D. located? ▼
Geoffrey Hart, M.D. is located at 50 STANIFORD ST, Boston, MA, 02114. Phone: (781) 341-3966.
What is Geoffrey Hart, M.D.'s NPI number? ▼
Geoffrey Hart, M.D.'s National Provider Identifier (NPI) is 1164406419, issued on 11/30/2005.
Does Geoffrey Hart, M.D. prescribe more brand-name or generic drugs? ▼
Geoffrey Hart, M.D.'s prescribing is 5% brand-name and 95% generic drugs by claim count, with $16K in brand drug costs.
How many Anesthesiology Physician providers are there in the US? ▼
There are 56,432 Anesthesiology Physician providers across 56 states in the US. The average Anesthesiology Physician provider writes 860 Medicare Part D claims per year.
What drugs does Geoffrey Hart, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Geoffrey Hart, M.D.'s most frequently prescribed drugs include Dextroamphetamine-Amphetamine, Buprenorphine-Naloxone, Buprenorphine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Geoffrey Hart, M.D. accept Medicare? ▼
Geoffrey Hart, M.D. appears in CMS Medicare data with 394 Part D claims and 14 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Geoffrey Hart, M.D.'s credentials? ▼
Geoffrey Hart, M.D.'s NPI is 1164406419 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.