2026 NPPES data Family Medicine Physician NPI 1023007978 M.D.
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JOHN CHALFANT, M.D.

Family Medicine Physician in UNIONTOWN, Pennsylvania. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
12K
Medicare Part D claims · 582 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$92.65
5 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

JOHN CHALFANT, M.D. filed 11,883 Medicare Part D claims in 2023 as a Family Medicine Physician in UNIONTOWN, Pennsylvania, prescribing 88% generic.

12K
Part D claims, 2023
88%
generic prescribing
Likely
board-certified (heuristic)

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.

JOHN CHALFANT, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

11,883 Top 2% higher than 98% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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 certification likely (heuristic — not verified)

JOHN CHALFANT, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — 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 JOHN CHALFANT, M.D.?

Quality data not reported

NPI registry status

Active

Issued 10/13/2005

NPI 1023007978

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

11,883 248% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in Pennsylvania

How Family Medicine Physician compares to other specialties among Pennsylvania providers

Pennsylvania providers

Family Medicine Physician share within Pennsylvania

1. Family Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Medicine Physician share within Pennsylvania

Specialty board-certification context

Estimated specialty board-certified rate — Family Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Family Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate

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).

JOHN CHALFANT, M.D. appears in the CMS NPPES registry as a Family Medicine Physician provider holding M.D. credentials at 202 JACOB MURPHY LN STE 102, UNIONTOWN, PA, 15401, with a listed phone of (724) 437-8880. NPI 1023007978 was issued on 10/13/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHALFANT 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 11,883 prescription claims written by this provider, covering 582 Medicare beneficiaries and totaling roughly $1.0 million in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 0.6%. 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.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

202 JACOB MURPHY LN STE 102
UNIONTOWN, PA 15401

Provider Details

NPI 1023007978
Specialty Family Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 10/13/2005

Hospital and facility affiliations

Facilities where JOHN CHALFANT, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

NOVACARE OUTPATIENT REHABILITATION EAST, INC.
MASONTOWN, PA
PREFERRED PRIMARY CARE PHYSICIANS, INC.
CARNEGIE, PA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for JOHN CHALFANT, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$93

Largest payer

Novo Nordisk Inc

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

License & disciplinary context — Pennsylvania PA-BOM 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 ~45K Pennsylvania medical licensees in 2023 — they are NOT specific to JOHN CHALFANT, M.D.. To verify JOHN CHALFANT, M.D.'s current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases

PA-BOM 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 Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

JOHN CHALFANT, M.D. — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 11,883 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.

11,883
Total Claims
$1.0M
Total Drug Cost
582
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
21,862
Total Day Supply
634,658
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$823K
Generic Drug Cost
$184K
Opioid Claims
76 (0.6% rate)
Antibiotic Claims
297

Patient Demographics

Average Patient Age
72.6 years
Avg HCC Risk Score
1.52
Gender Split
53% female / 47% male
Age Distribution
<65: 66, 65-74: 284, 75-84: 182, 85+: 50

Top Prescribed Drugs (Medicare Part D)

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

What JOHN CHALFANT, 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
Levothyroxine Sodium
664
Atorvastatin Calcium
530
Metformin Hcl
425
Amlodipine Besylate
420
Pantoprazole Sodium
358
Losartan Potassium
343
Carvedilol
312
Lisinopril
307
Potassium Chloride
300
Pravastatin Sodium
272

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

Family Medicine Physician Overview

How JOHN CHALFANT, M.D. fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

JOHN CHALFANT, M.D.'s 11,883 claims are above the specialty average of 3,418.

Nearby Family Medicine Physician Providers in Pennsylvania

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

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

Frequently Asked Questions

What is JOHN CHALFANT, M.D.'s specialty?
JOHN CHALFANT, M.D. specializes in Family Medicine Physician and practices in UNIONTOWN, Pennsylvania. Credentials: M.D..
How much does JOHN CHALFANT, M.D. prescribe under Medicare Part D?
In 2023, JOHN CHALFANT, M.D. wrote 11,883 Medicare Part D claims totaling $1.0M in drug costs for 582 beneficiaries.
Where is JOHN CHALFANT, M.D. located?
JOHN CHALFANT, M.D. is located at 202 JACOB MURPHY LN STE 102, UNIONTOWN, PA, 15401. Phone: (724) 437-8880.
What is JOHN CHALFANT, M.D.'s NPI number?
JOHN CHALFANT, M.D.'s National Provider Identifier (NPI) is 1023007978, issued on 10/13/2005.
Does JOHN CHALFANT, M.D. prescribe more brand-name or generic drugs?
JOHN CHALFANT, M.D.'s prescribing is 12% brand-name and 88% generic drugs by claim count, with $823K in brand drug costs.
Does JOHN CHALFANT, M.D. prescribe opioids?
Yes, JOHN CHALFANT, M.D. had 76 opioid claims in 2023 with an opioid prescribing rate of 0.6%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 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 JOHN CHALFANT, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JOHN CHALFANT, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOHN CHALFANT, M.D. accept Medicare?
JOHN CHALFANT, M.D. appears in CMS Medicare data with 11,883 Part D claims and 582 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN CHALFANT, M.D.'s credentials?
JOHN CHALFANT, M.D.'s NPI is 1023007978 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