2026 NPPES data Hematology & Oncology Physician NPI 1063493302 M.D.
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Susan Donohue, M.D.

Hematology & Oncology Physician in Marlborough, 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 11,215 in Hematology & Oncology 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
327
Medicare Part D claims · 64 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
74%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Susan Donohue, M.D. filed 327 Medicare Part D claims in 2023 as a Hematology & Oncology Physician in Marlborough, Massachusetts, prescribing 74% generic.

327
Part D claims, 2023
74%
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.

Susan Donohue, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

327 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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)

Susan Donohue, 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 Susan Donohue, M.D.?

Quality data not reported

NPI registry status

Active

Issued 11/11/2005

NPI 1063493302

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

327 61% vs specialty avg

2023 prescription claims

Specialty avg: 847

Specialty distribution in Massachusetts

How Hematology & Oncology Physician compares to other specialties among Massachusetts providers

Massachusetts providers

Largest specialties in Massachusetts (% of in-state providers)

Mental Health Counselor - 8.3%Mental Health Counselor8.3%Clinical Social Worker - 7.8%Clinical Social Worker7.8%Student in an Organized Health Care Education/Training Program - 6.2%Student in an Organized Health Care Education/Training Program6.2%Behavior Technician - 4.9%Behavior Technician4.9%Counselor - 4.3%Counselor4.3%Internal Medicine Physician - 3.7%Internal Medicine Physician3.7%Hematology & Oncology Physician - 0.2%Hematology & Oncology Physician0.2%
Largest specialties in Massachusetts (% of in-state 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 Hematology & Oncology Physician. Verify directly:

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).

Susan Donohue, M.D. appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding M.D. credentials at 157 UNION ST, Marlborough, MA, 01752, with a listed phone of (508) 486-6700. NPI 1063493302 was issued on 11/11/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Donohue most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 327 prescription claims written by this provider, covering 64 Medicare beneficiaries and totaling roughly $1.2 million in drug spend, split 26% brand-name and 74% generic by claim count. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,215 enrolled providers across 54 states and an average of 847 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

157 UNION ST
Marlborough, MA 01752

Provider Details

NPI 1063493302
Specialty Hematology & Oncology Physician
Credentials M.D.
Gender Female
NPI Issued 11/11/2005

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 Susan Donohue, M.D.. To verify Susan Donohue, 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 · Above average

Susan Donohue, M.D. - brand share 26.0%
Hematology & Oncology Physician average

26% brand-name claims vs 74% generic, on 327 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.

327
Total Claims
$1.2M
Total Drug Cost
64
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
531
Total Day Supply
15,008
Brand vs Generic
26% brand / 74% generic
Brand Drug Cost
$1.1M
Generic Drug Cost
$99K
Antibiotic Claims
19

Patient Demographics

Average Patient Age
73.0 years
Avg HCC Risk Score
1.31
Gender Split
83% female / 17% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Susan Donohue, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Anastrozole
70
Imbruvica
Ibrutinib
43
Exemestane
39
Revlimid
Lenalidomide
16
Lorazepam
15
Hydroxyurea
14
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
13
Tamoxifen Citrate
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Hematology & Oncology Physician Overview

How Susan Donohue, M.D. fits within the Hematology & Oncology Physician landscape nationally.

11,215
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider

Susan Donohue, M.D.'s 327 claims are below the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in Massachusetts

Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Donohue.

Compare Hematology & Oncology 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 Hematology & Oncology 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.

Frequently Asked Questions

What is Susan Donohue, M.D.'s specialty?
Susan Donohue, M.D. specializes in Hematology & Oncology Physician and practices in Marlborough, Massachusetts. Credentials: M.D..
How much does Susan Donohue, M.D. prescribe under Medicare Part D?
In 2023, Susan Donohue, M.D. wrote 327 Medicare Part D claims totaling $1.2M in drug costs for 64 beneficiaries.
Where is Susan Donohue, M.D. located?
Susan Donohue, M.D. is located at 157 UNION ST, Marlborough, MA, 01752. Phone: (508) 486-6700.
What is Susan Donohue, M.D.'s NPI number?
Susan Donohue, M.D.'s National Provider Identifier (NPI) is 1063493302, issued on 11/11/2005.
Does Susan Donohue, M.D. prescribe more brand-name or generic drugs?
Susan Donohue, M.D.'s prescribing is 26% brand-name and 74% generic drugs by claim count, with $1.1M in brand drug costs.
How many Hematology & Oncology Physician providers are there in the US?
There are 11,215 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does Susan Donohue, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Susan Donohue, M.D.'s most frequently prescribed drugs include Anastrozole, Imbruvica, Exemestane. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Susan Donohue, M.D. accept Medicare?
Susan Donohue, M.D. appears in CMS Medicare data with 327 Part D claims and 64 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Susan Donohue, M.D.'s credentials?
Susan Donohue, M.D.'s NPI is 1063493302 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

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.