2026 NPPES data Family Medicine Physician NPI 1033109236 MD
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JOHN SLATTERY, MD

Family Medicine Physician in EAST GREENWICH, Rhode Island. 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
4K
Medicare Part D claims · 182 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$957.6
43 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

JOHN SLATTERY, MD filed 3,637 Medicare Part D claims in 2023 as a Family Medicine Physician in EAST GREENWICH, Rhode Island, prescribing 90% generic.

4K
Part D claims, 2023
90%
generic prescribing
$957.6
industry payments (Sunshine Act)

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

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

3,637 Top 9% higher than 91% 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-eligible specialty (heuristic — not verified)

JOHN SLATTERY, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about JOHN SLATTERY, MD?

Quality data not reported

NPI registry status

Active

Issued 10/27/2005

NPI 1033109236

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

3,637 6% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in Rhode Island

How Family Medicine Physician compares to other specialties among Rhode Island providers

Rhode Island providers

Family Medicine Physician share within Rhode Island

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

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 SLATTERY, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at 925 MAIN ST, EAST GREENWICH, RI, 02818, with a listed phone of (401) 884-5333. NPI 1033109236 was issued on 10/27/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SLATTERY 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 3,637 prescription claims written by this provider, covering 182 Medicare beneficiaries and totaling roughly $339K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 6.4%. 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

925 MAIN ST
EAST GREENWICH, RI 02818

Provider Details

NPI 1033109236
Specialty Family Medicine Physician
Credentials MD
Gender Male
NPI Issued 10/27/2005

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

Total received

$958

Largest payer

AstraZeneca Pharmaceuticals LP

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 · Typical

JOHN SLATTERY, MD — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 3,637 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.

3,637
Total Claims
$339K
Total Drug Cost
182
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
7,174
Total Day Supply
204,050
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$255K
Generic Drug Cost
$83K
Opioid Claims
232 (6.4% rate)
Antibiotic Claims
174

Patient Demographics

Average Patient Age
75.6 years
Avg HCC Risk Score
0.98
Gender Split
53% female / 47% male

Top Prescribed Drugs (Medicare Part D)

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

What JOHN SLATTERY, 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
Rosuvastatin Calcium
167
Levothyroxine Sodium
143
Atorvastatin Calcium
141
Clonazepam
113
Metformin Hcl
89
Amlodipine Besylate
81
Oxycodone Hcl
78
Prednisone
76
Lisinopril
70
Omeprazole
67

* 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 SLATTERY, 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

JOHN SLATTERY, MD's 3,637 claims are above the specialty average of 3,418.

Nearby Family Medicine Physician Providers in Rhode Island

Other clinicians with the same primary specialty enrolled in Rhode Island, drawn from the same CMS NPPES roster as SLATTERY.

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

Frequently Asked Questions

What is JOHN SLATTERY, MD's specialty?
JOHN SLATTERY, MD specializes in Family Medicine Physician and practices in EAST GREENWICH, Rhode Island. Credentials: MD.
How much does JOHN SLATTERY, MD prescribe under Medicare Part D?
In 2023, JOHN SLATTERY, MD wrote 3,637 Medicare Part D claims totaling $339K in drug costs for 182 beneficiaries.
Where is JOHN SLATTERY, MD located?
JOHN SLATTERY, MD is located at 925 MAIN ST, EAST GREENWICH, RI, 02818. Phone: (401) 884-5333.
What is JOHN SLATTERY, MD's NPI number?
JOHN SLATTERY, MD's National Provider Identifier (NPI) is 1033109236, issued on 10/27/2005.
Does JOHN SLATTERY, MD prescribe more brand-name or generic drugs?
JOHN SLATTERY, MD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $255K in brand drug costs.
Does JOHN SLATTERY, MD prescribe opioids?
Yes, JOHN SLATTERY, MD had 232 opioid claims in 2023 with an opioid prescribing rate of 6.4%.
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 SLATTERY, MD prescribe most often?
Based on 2023 Medicare Part D data, JOHN SLATTERY, MD's most frequently prescribed drugs include Rosuvastatin Calcium, Levothyroxine Sodium, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOHN SLATTERY, MD accept Medicare?
JOHN SLATTERY, MD appears in CMS Medicare data with 3,637 Part D claims and 182 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN SLATTERY, MD's credentials?
JOHN SLATTERY, MD's NPI is 1033109236 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