2026 NPPES data Family Medicine Physician NPI 1003174004 MD
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SUSAN GRAY, MD

Family Medicine Physician in FENTON, Missouri. 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 · 862 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$25.55
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

SUSAN GRAY, MD filed 11,729 Medicare Part D claims in 2023 as a Family Medicine Physician in FENTON, Missouri, prescribing 91% generic.

12K
Part D claims, 2023
91%
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.

SUSAN GRAY, MD's Medicare Part D volume vs every U.S. prescriber

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

11,729 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)

SUSAN GRAY, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 SUSAN GRAY, MD?

Quality data not reported

NPI registry status

Active

Issued 04/26/2012

NPI 1003174004

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

11,729 243% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in Missouri

How Family Medicine Physician compares to other specialties among Missouri providers

Missouri providers

Family Medicine Physician share within Missouri

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

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).

SUSAN GRAY, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at 1345 SMIZER MILL RD STE 1100, FENTON, MO, 63026, with a listed phone of (636) 496-5023. NPI 1003174004 was issued on 04/26/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GRAY 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 11,729 prescription claims written by this provider, covering 862 Medicare beneficiaries and totaling roughly $853K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 2.8%. 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

1345 SMIZER MILL RD STE 1100
FENTON, MO 63026

Provider Details

NPI 1003174004
Specialty Family Medicine Physician
Credentials MD
Gender Female
NPI Issued 04/26/2012

Hospital and facility affiliations

Facilities where SUSAN GRAY, 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.

SSM MEDICAL GROUP INC
FENTON, MO

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 SUSAN GRAY, MD. Source: openpaymentsdata.cms.gov.

Total received

$26

Largest payer

ABBVIE 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 · Generic-heavy

SUSAN GRAY, MD — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 11,729 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.

11,729
Total Claims
$853K
Total Drug Cost
862
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
28,336
Total Day Supply
825,761
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$657K
Generic Drug Cost
$192K
Opioid Claims
327 (2.8% rate)
Antibiotic Claims
255

Patient Demographics

Average Patient Age
72.7 years
Avg HCC Risk Score
1.22
Gender Split
66% female / 34% male
Age Distribution
<65: 72, 65-74: 460, 75-84: 268, 85+: 62

Top Prescribed Drugs (Medicare Part D)

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

What SUSAN GRAY, 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
Atorvastatin Calcium
874
Losartan Potassium
445
Levothyroxine Sodium
430
Amlodipine Besylate
359
Lisinopril
301
Alprazolam
300
Omeprazole
298
Simvastatin
276
Gabapentin
241
Hydrochlorothiazide
237

* 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 SUSAN GRAY, MD 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

SUSAN GRAY, MD's 11,729 claims are above the specialty average of 3,418.

Nearby Family Medicine Physician Providers in Missouri

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

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

Frequently Asked Questions

What is SUSAN GRAY, MD's specialty?
SUSAN GRAY, MD specializes in Family Medicine Physician and practices in FENTON, Missouri. Credentials: MD.
How much does SUSAN GRAY, MD prescribe under Medicare Part D?
In 2023, SUSAN GRAY, MD wrote 11,729 Medicare Part D claims totaling $853K in drug costs for 862 beneficiaries.
Where is SUSAN GRAY, MD located?
SUSAN GRAY, MD is located at 1345 SMIZER MILL RD STE 1100, FENTON, MO, 63026. Phone: (636) 496-5023.
What is SUSAN GRAY, MD's NPI number?
SUSAN GRAY, MD's National Provider Identifier (NPI) is 1003174004, issued on 04/26/2012.
Does SUSAN GRAY, MD prescribe more brand-name or generic drugs?
SUSAN GRAY, MD's prescribing is 9% brand-name and 91% generic drugs by claim count, with $657K in brand drug costs.
Does SUSAN GRAY, MD prescribe opioids?
Yes, SUSAN GRAY, MD had 327 opioid claims in 2023 with an opioid prescribing rate of 2.8%.
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 SUSAN GRAY, MD prescribe most often?
Based on 2023 Medicare Part D data, SUSAN GRAY, MD's most frequently prescribed drugs include Atorvastatin Calcium, Losartan Potassium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SUSAN GRAY, MD accept Medicare?
SUSAN GRAY, MD appears in CMS Medicare data with 11,729 Part D claims and 862 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SUSAN GRAY, MD's credentials?
SUSAN GRAY, MD's NPI is 1003174004 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.
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