2026 NPPES data Hematology & Oncology Physician NPI 1891904231 MD
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JOHN MILLER, MD

Hematology & Oncology Physician in WILLIAMSBURG, Virginia. 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
1K
Medicare Part D claims · 236 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
72%
generic claims · 28% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
94.0775/100
▲ 11 pts above national avg 83.1 · [object Object]
Industry payments
$348.79
12 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

JOHN MILLER, MD reported a CMS MIPS final score of 94.0775/100 — above the 83.1 national average — and filed 1,217 Medicare Part D claims in 2023.

94.0775/100
MIPS score · +11 vs avg
1K
Part D claims, 2023
72%
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 MILLER, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

94 Top 25% higher than 75% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored 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.

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

Board certification likely (heuristic — not verified)

JOHN MILLER, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — 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 MILLER, MD?

High performer (top quartile)

NPI registry status

Active

Issued 05/22/2007

NPI 1891904231

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

1,217 44% vs specialty avg

2023 prescription claims

Specialty avg: 847

MIPS final score

94.0775/100 10.977500000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Virginia

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

Virginia providers

Hematology & Oncology Physician share within Virginia

1. Hematology & Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hematology & Oncology Physician share within Virginia

Medicare quality performance — MIPS

JOHN MILLER, MD's 2023 MIPS final score plotted against the Hematology & Oncology Physician national average

High performer (top quartile)
MIPS Final Score
94.0775/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Hematology & Oncology Physician) — 94.0775/100 vs national avg 83.1

0%100%National avg83%94.1%
MIPS final score (Hematology & Oncology Physician) — 94.0775/100 vs national avg 83.1

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 MILLER, MD appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding MD credentials at 120 KINGS WAY, WILLIAMSBURG, VA, 23185, with a listed phone of (757) 345-5724. NPI 1891904231 was issued on 05/22/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MILLER 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 1,217 prescription claims written by this provider, covering 236 Medicare beneficiaries and totaling roughly $3.3 million in drug spend, split 28% brand-name and 72% generic by claim count, with an opioid prescribing rate of 2.2%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 94.0775/100 for the 2023 performance year (Quality 90.6515), compared with the national average of 83.1.

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

120 KINGS WAY
WILLIAMSBURG, VA 23185

Provider Details

NPI 1891904231
Specialty Hematology & Oncology Physician
Credentials MD
Gender Male
NPI Issued 05/22/2007

CMS Quality Score (MIPS)

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

94.0775
Final Score
Avg: 83.1
90.6515
Quality
95.8391
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where JOHN MILLER, MD 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.

PENINSULA CANCER INSTITUTE, LLC
WILLIAMSBURG, VA

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 MILLER, MD. Source: openpaymentsdata.cms.gov.

Total received

$349

Largest payer

SOBI, 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.

Brand vs generic prescribing mix · Above average

JOHN MILLER, MD — brand share 28.0%
Specialty average (est.)

28% brand-name claims vs 72% generic, on 1,217 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.

1,217
Total Claims
$3.3M
Total Drug Cost
236
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,918
Total Day Supply
54,107
Brand vs Generic
28% brand / 72% generic
Brand Drug Cost
$2.4M
Generic Drug Cost
$893K
Opioid Claims
27 (2.2% rate)
Antibiotic Claims
24

Patient Demographics

Average Patient Age
74.0 years
Avg HCC Risk Score
2.33
Gender Split
66% female / 34% male
Age Distribution
<65: 20, 65-74: 105, 75-84: 91, 85+: 20

Top Prescribed Drugs (Medicare Part D)

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

What JOHN MILLER, MD 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
Letrozole
178
Abiraterone Acetate
115
Eliquis
Apixaban
97
Prednisone
86
Revlimid
Lenalidomide
38
Anastrozole
34
Venclexta
Venetoclax
34
Levothyroxine Sodium
33
Tamoxifen Citrate
30
Xarelto
Rivaroxaban
28

* 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 JOHN MILLER, MD 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

JOHN MILLER, MD's 1,217 claims are above the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in Virginia

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

Compare Hematology & Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOHN MILLER, MD's specialty?
JOHN MILLER, MD specializes in Hematology & Oncology Physician and practices in WILLIAMSBURG, Virginia. Credentials: MD.
How much does JOHN MILLER, MD prescribe under Medicare Part D?
In 2023, JOHN MILLER, MD wrote 1,217 Medicare Part D claims totaling $3.3M in drug costs for 236 beneficiaries.
What is JOHN MILLER, MD's Medicare quality score?
JOHN MILLER, MD has a CMS MIPS Final Score of 94.0775/100 (Quality: 90.6515). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is JOHN MILLER, MD located?
JOHN MILLER, MD is located at 120 KINGS WAY, WILLIAMSBURG, VA, 23185. Phone: (757) 345-5724.
What is JOHN MILLER, MD's NPI number?
JOHN MILLER, MD's National Provider Identifier (NPI) is 1891904231, issued on 05/22/2007.
Does JOHN MILLER, MD prescribe more brand-name or generic drugs?
JOHN MILLER, MD's prescribing is 28% brand-name and 72% generic drugs by claim count, with $2.4M in brand drug costs.
Does JOHN MILLER, MD prescribe opioids?
Yes, JOHN MILLER, MD had 27 opioid claims in 2023 with an opioid prescribing rate of 2.2%.
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 JOHN MILLER, MD prescribe most often?
Based on 2023 Medicare Part D data, JOHN MILLER, MD's most frequently prescribed drugs include Letrozole, Abiraterone Acetate, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOHN MILLER, MD accept Medicare?
JOHN MILLER, MD appears in CMS Medicare data with 1,217 Part D claims and 236 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN MILLER, MD's credentials?
JOHN MILLER, MD's NPI is 1891904231 with credentials MD. 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.
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