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2026 NPPES data Hospice and Palliative Medicine (Family Medicine) Physician NPI 1972551364 M.D.
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William Mullinax, M.D.

Hospice and Palliative Medicine (Family Medicine) Physician in Collierville, Tennessee.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 830 in Hospice and Palliative Medicine (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
205
Medicare Part D claims · 83 beneficiaries · Hospice and Palliative Medicine (Family Medicine) Physician avg: 2K
MIPS score
76.5/100
▼ 7 pts below national avg 83.5 · Above neutral
Industry payments
$141.84
1 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

William Mullinax, M.D. reported a CMS MIPS final score of 76.5/100 - below the 83.5 national average - and filed 205 Medicare Part D claims in 2024.

76.5/100
MIPS score · -7 vs avg
205
Part D claims, 2024
Likely
board-certified (heuristic)
≥17th
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.

Federal trust snapshot

What official records show about William Mullinax, M.D.

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1972551364), first enumerated 05/05/2006.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 205 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 76.5/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Board certification signal

    Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.

    Source: NUCC taxonomy + CMS participation heuristic

  • Reported

    Hospital affiliations

    1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.

    Source: CMS Care Compare

  • Reported

    Industry payment transparency

    $141.84 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.

    Source: CMS Open Payments

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

CMS NPPES provider registry desk

NPI 1972551364 · Hospice and Palliative Medicine (Family Medicine) Physician

NPI-10 · ENUM-LEGACY · TAX-NARROW · MIPS-BELOW · RX-LIGHT · BOOK-THIN · PHOTO-FINISH

  • NPI-10 1972551364
  • ENUM-LEGACY 2006
  • TAX-NARROW 830
  • MIPS-BELOW 76.5/100
  • RX-LIGHT 205
  • BOOK-THIN 17 in Tennessee
  • PHOTO-FINISH Shireen Heidari · ±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 Mullinax, 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.

77 ≥ 17th percentile 17% 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%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). This entry sits in this band. 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 Mullinax, M.D. sits

This provider among hospice and palliative medicine (family medicine) physician peers

Across the 142 hospice and palliative medicine (family medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, William Mullinax, M.D. writes more Part D claims than 33% of them and scores higher on MIPS quality than 13% - 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 quality0255075100024.949.974.899.8Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 57William Mullinax, M.D., Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 13
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one hospice and palliative medicine (family medicine) physician peer from a representative sample of 60; the gold marker is William Mullinax, 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 Mullinax, M.D. 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 William Mullinax, M.D.?

Below national average

NPI registry status

Active

Issued 05/05/2006

NPI 1972551364

Primary specialty

Hospice and Palliative Medicine (Family Medicine) Physician

Niche

830 US NPIs in this specialty

Medicare Part D claims

205 90% vs specialty avg

2024 prescription claims

Specialty avg: 2,137

MIPS final score

76.5/100 7 pts vs avg

Above neutral band

vs 83.5 national avg

Specialty distribution in Tennessee

How Hospice and Palliative Medicine (Family Medicine) Physician compares to other specialties among Tennessee providers

Tennessee providers
Family Nurse Practitioner6.4%Pharmacist5.8%Student in an Organized Heal…4.7%Behavior Technician4.5%Physical Therapist4.2%Registered Nurse3.9%Hospice and Palliative Medic…0%
Largest specialties in Tennessee (% of in-state providers)

Medicare quality performance, MIPS

William Mullinax, M.D.'s 2023 MIPS final score plotted against the Hospice and Palliative Medicine (Family Medicine) Physician national average

Below national average
MIPS Final Score
76.5/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%76.5%
MIPS final score (Hospice and Palliative Medicine (Family Medicine) Physician) - 76.5/100 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

1500 W POPLAR AVE
Collierville, TN 38017
(901) 226-2800

Provider Details

NPI 1972551364
Specialty Hospice and Palliative Medicine (Family Medicine) Physician
Credentials M.D.
Gender Male
NPI Issued 05/05/2006

CMS Quality Score (MIPS)

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

76.5182
Final Score
Measured-score avg: 83.5
70.5342
Quality
66.1931
Cost
82
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where William Mullinax, 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.

Baptist Memorial Medical Group, Inc.
Memphis, TN

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 William Mullinax, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$142

Largest payer

Siemens Medical Solutions USA, 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2024.

205
Total Claims
$7K
Total Drug Cost
83
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
217.367
Total Day Supply
3,335
Generic Drug Cost
$2K
Opioid Claims
34 (16.6% rate)
Antibiotic Claims
13

Patient Demographics

Average Patient Age
75.5 years
Avg HCC Risk Score
2.99
Gender Split
61% female / 39% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

Drug Claims
Lorazepam
 14

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

More Hospice and Palliative Medicine (Family Medicine) Physician in TN → All providers in Tennessee → Compare specialties →

Hospice and Palliative Medicine (Family Medicine) Physician Overview

How William Mullinax, M.D. fits within the Hospice and Palliative Medicine (Family Medicine) Physician landscape nationally.

830
Hospice and Palliative Medicine (Family Medicine) Physician Providers in US
51
States with Hospice and Palliative Medicine (Family Medicine) Physician
2,137
Avg Claims per Provider

William Mullinax, M.D.'s 205 claims are below the specialty average of 2,137.

Nationwide Hospice and Palliative Medicine (Family Medicine) Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Mullinax, both outside Tennessee so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (76.5 here).

Arpine Saribekyan 76.5 NY Shireen Heidari 76.5 CA Evaleen Jones 76.5 CA Todd Brandtman 76.7 CA

Same NPPES enumeration year (2006)

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

Gayle Bereskin Park Ridge, IL James Horak Bend, OR Frank Romero Springfield, MO Larissa Colon-Bengoa Boynton Beach, FL

Nearby Hospice and Palliative Medicine (Family Medicine) Physician Providers in Tennessee

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

One of 17 Hospice and Palliative Medicine (Family Medicine) Physician providers enrolled in Tennessee, 5 are shown here.

Dr. Austin Dalgo
M.D.
Memphis, TN
Dr. Arthur Davies
M.D.
Monteagle, TN
Dr. Nikkalynn Delaurentis
DO
Clarksville, TN
Dr. Shazia Fazili
M.D.
Murfreesboro, TN
Dr. Erin Kipp
DO
Knoxville, TN

Compare Hospice and Palliative Medicine (Family Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is William Mullinax, M.D.'s specialty? ▼
William Mullinax, M.D. specializes in Hospice and Palliative Medicine (Family Medicine) Physician and practices in Collierville, Tennessee. Credentials: M.D..
How much does William Mullinax, M.D. prescribe under Medicare Part D? ▼
In 2024, William Mullinax, M.D. wrote 205 Medicare Part D claims totaling $7K in drug costs for 83 beneficiaries.
What is William Mullinax, M.D.'s Medicare quality score? ▼
William Mullinax, M.D. has a CMS MIPS Final Score of 76.5/100 (Quality: 70.5, Cost: 66.2). 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 Mullinax, M.D. located? ▼
William Mullinax, M.D. is located at 1500 W POPLAR AVE, Collierville, TN, 38017. Phone: (901) 226-2800.
What is William Mullinax, M.D.'s NPI number? ▼
William Mullinax, M.D.'s National Provider Identifier (NPI) is 1972551364, issued on 05/05/2006.
Does William Mullinax, M.D. prescribe opioids? ▼
Yes, William Mullinax, M.D. had 34 opioid claims in 2024 with an opioid prescribing rate of 16.6%.
How many Hospice and Palliative Medicine (Family Medicine) Physician providers are there in the US? ▼
There are 830 Hospice and Palliative Medicine (Family Medicine) Physician providers across 51 states in the US. The average Hospice and Palliative Medicine (Family Medicine) Physician provider writes 2,137 Medicare Part D claims per year.
What drugs does William Mullinax, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, William Mullinax, M.D.'s most frequently prescribed drugs include Lorazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Mullinax, M.D. accept Medicare? ▼
William Mullinax, M.D. appears in CMS Medicare data with 205 Part D claims and 83 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Mullinax, M.D.'s credentials? ▼
William Mullinax, M.D.'s NPI is 1972551364 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.