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2026 NPPES data Family Medicine Physician NPI 1356306617 M.D.
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William Heffernan, M.D.

Family Medicine Physician in Highland, New York.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,760 in Family Medicine 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
338
Medicare Part D claims · 116 beneficiaries · Family Medicine Physician avg: 3K
MIPS score
56.4/100
▼ 27 pts below national avg 83.5 · Mid-tier
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

William Heffernan, M.D. reported a CMS MIPS final score of 56.4/100 - below the 83.5 national average - and filed 338 Medicare Part D claims in 2023.

56.4/100
MIPS score · -27 vs avg
338
Part D claims, 2023
Likely
board-certified (heuristic)
≥5th
pct among measured MIPS (lower-bound band)

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.

CMS NPPES provider registry desk

NPI 1356306617 · Family Medicine Physician

NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-LOW · RX-LIGHT · BOOK-MID · PHOTO-FINISH

  • NPI-10 1356306617
  • ENUM-LEGACY 2006
  • TAX-MEGA 148K Family Medicine
  • MIPS-LOW 56.4/100
  • RX-LIGHT 338
  • BOOK-MID 5,914 in New York
  • PHOTO-FINISH Daniel Sanchez · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

William Heffernan, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

56 ≥ 5th percentile 5% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). This entry sits in this band. 60–70: 13,906 measured providers (3%). Above this entry. 70–80: 94,570 measured providers (21%). Above this entry. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured providers. 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where William Heffernan, M.D. sits

This provider among family medicine physician peers

Across the 21,266 family medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, William Heffernan, M.D. writes more Part D claims than 19% of them and scores higher on MIPS quality than 7% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 98Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 98Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 37William Heffernan, M.D., Part D claim volume, percentile in specialty: 19 · MIPS quality, percentile: 7
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one family medicine physician peer from a representative sample of 60; the gold marker is William Heffernan, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

William Heffernan, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about William Heffernan, M.D.?

Below national average

NPI registry status

Active

Issued 04/19/2006

NPI 1356306617

Primary specialty

Family Medicine Physician

High-volume

147,760 US NPIs in this specialty

Medicare Part D claims

338 90% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

MIPS final score

56.4/100 27.1 pts vs avg

Mid-tier band

vs 83.5 national avg

Specialty distribution in New York

How Family Medicine Physician compares to other specialties among New York providers

New York providers
Student in an Organized Heal…7.8%Registered Nurse5.2%Clinical Social Worker4.9%Social Worker4.5%Speech-Language Pathologist4.5%Licensed Practical Nurse4.3%Family Medicine Physician1.1%
Largest specialties in New York (% of in-state providers)

Medicare quality performance, MIPS

William Heffernan, M.D.'s 2023 MIPS final score plotted against the Family Medicine Physician national average

Below national average
MIPS Final Score
56.4/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%56.4%
MIPS final score (Family Medicine Physician) - 56.4/100 vs national avg 83.5
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).

Practice Address

514 STATE ROUTE 299
Highland, NY 12528
(845) 691-9200

Provider Details

NPI 1356306617
Specialty Family Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 04/19/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

56.3858
Final Score
Measured-score avg: 83.5
12.8321
Quality
64.3082
Cost
99
Promoting Interoperability

Reporting: Group practice

License & disciplinary context - New York NYSBPMC 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 ~100K New York medical licensees in 2023 - they are NOT specific to William Heffernan, M.D.. To verify William Heffernan, M.D.'s current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases

NYSBPMC 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 New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

338
Total Claims
$45K
Total Drug Cost
116
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
899
Total Day Supply
26,913
Generic Drug Cost
$5K

Patient Demographics

Average Patient Age
72.3 years
Avg HCC Risk Score
1.09
Gender Split
70% female / 30% male

Top Prescribed Drugs (Medicare Part D)

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

What William Heffernan, 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
Atorvastatin Calcium
 29
Levothyroxine Sodium
 23
Omeprazole
 18
Amlodipine Besylate
 15
Rosuvastatin Calcium
 14
Lisinopril
 12

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

More Family Medicine Physician in NY → All providers in New York → Compare specialties →

Family Medicine Physician Overview

How William Heffernan, M.D. fits within the Family Medicine Physician landscape nationally.

147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

William Heffernan, M.D.'s 338 claims are below the specialty average of 3,418.

Nationwide Family Medicine Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Heffernan, both outside New York so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (56.4 here).

Daniel Sanchez 56.4 MA Justo Sataray 56.4 NV Pegah Akbari 56.4 MI Carolyn Ebert 56.4 MI

Same NPPES enumeration year (2006)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Imelda Kelly Portland, OR John Welch Palmyra, PA John Triplett Pikeville, KY Timothy Todd Fayetteville, NC

Nearby Family Medicine Physician Providers in New York

Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Heffernan.

One of 5,914 Family Medicine Physician providers enrolled in New York, 5 are shown here.

Dr. Stuart Aaronson
M.D.
New York, NY
Dr. Amarachi Abara
MD
Bronx, NY
Dr. Sharon Abara-Palaganas
MD
Brooklyn, NY
Dr. Mary Claire Abbot
MD
New York, NY
Dr. Heather Abdalla
FNP-C
Horseheads, NY

Compare Family Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is William Heffernan, M.D.'s specialty? ▼
William Heffernan, M.D. specializes in Family Medicine Physician and practices in Highland, New York. Credentials: M.D..
How much does William Heffernan, M.D. prescribe under Medicare Part D? ▼
In 2023, William Heffernan, M.D. wrote 338 Medicare Part D claims totaling $45K in drug costs for 116 beneficiaries.
What is William Heffernan, M.D.'s Medicare quality score? ▼
William Heffernan, M.D. has a CMS MIPS Final Score of 56.4/100 (Quality: 12.8, Cost: 64.3). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is William Heffernan, M.D. located? ▼
William Heffernan, M.D. is located at 514 STATE ROUTE 299, Highland, NY, 12528. Phone: (845) 691-9200.
What is William Heffernan, M.D.'s NPI number? ▼
William Heffernan, M.D.'s National Provider Identifier (NPI) is 1356306617, issued on 04/19/2006.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does William Heffernan, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, William Heffernan, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Heffernan, M.D. accept Medicare? ▼
William Heffernan, M.D. appears in CMS Medicare data with 338 Part D claims and 116 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Heffernan, M.D.'s credentials? ▼
William Heffernan, M.D.'s NPI is 1356306617 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
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 editorial process.

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.