2026 NPPES data Internal Medicine Physician NPI 1851824429 M.D.
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THOMAS BAKER, M.D.

Internal Medicine Physician in MOBILE, Alabama. 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
243
Medicare Part D claims · 95 beneficiaries · Internal Medicine Physician avg: 3K
Industry payments
$62.96
3 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: THOMAS BAKER, M.D. is a Internal Medicine Physician ([object Object]) practicing in MOBILE, Alabama with a Medicare Part D prescribing footprint of 243 claims across 95 beneficiaries . Industry payments of $62.96 across 3 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: THOMAS BAKER, M.D. filed 243 Medicare Part D claims in 2023 across MOBILE, Alabama. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

THOMAS BAKER, M.D. 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).

THOMAS BAKER, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 04/10/2017

NPI 1851824429

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

243 91% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Alabama

How Internal Medicine Physician compares to other specialties among Alabama providers

Alabama providers

Internal Medicine Physician share within Alabama

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Internal 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).

THOMAS BAKER, M.D. is a Internal Medicine Physician provider practicing in MOBILE, Alabama, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1851824429. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

THOMAS BAKER, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 2451 UNIVERSITY DRIVE, MOBILE, AL, 36617, with a listed phone of (251) 471-7000. NPI 1851824429 was issued on 04/10/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BAKER 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 243 prescription claims written by this provider, covering 95 Medicare beneficiaries and totaling roughly $17K in drug spend, with an opioid prescribing rate of 7.0%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

2451 UNIVERSITY DRIVE
MOBILE, AL 36617

Provider Details

NPI 1851824429
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 04/10/2017

Hospital and facility affiliations

Facilities where THOMAS BAKER, 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.

USA HEALTH COMMUNITY PROVIDERS LLC
MOBILE, AL

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 THOMAS BAKER, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$63

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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

243
Total Claims
$17K
Total Drug Cost
95
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
280
Total Day Supply
6,234
Generic Drug Cost
$7K
Opioid Claims
17 (7.0% rate)
Antibiotic Claims
37

Patient Demographics

Average Patient Age
71.6 years
Avg HCC Risk Score
2.69
Gender Split
45% female / 55% male
Age Distribution
<65: 22, 65-74: 29, 75-84: 28, 85+: 16

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Rosuvastatin Calcium
17
Amlodipine Besylate
11
Furosemide
11
Levofloxacin
11

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

Internal Medicine Physician Overview

How THOMAS BAKER, M.D. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

THOMAS BAKER, M.D.'s 243 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Alabama

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

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

Frequently Asked Questions

What is THOMAS BAKER, M.D.'s specialty?
THOMAS BAKER, M.D. specializes in Internal Medicine Physician and practices in MOBILE, Alabama. Credentials: M.D..
How much does THOMAS BAKER, M.D. prescribe under Medicare Part D?
In 2023, THOMAS BAKER, M.D. wrote 243 Medicare Part D claims totaling $17K in drug costs for 95 beneficiaries.
Where is THOMAS BAKER, M.D. located?
THOMAS BAKER, M.D. is located at 2451 UNIVERSITY DRIVE, MOBILE, AL, 36617. Phone: (251) 471-7000.
What is THOMAS BAKER, M.D.'s NPI number?
THOMAS BAKER, M.D.'s National Provider Identifier (NPI) is 1851824429, issued on 04/10/2017.
Does THOMAS BAKER, M.D. prescribe opioids?
Yes, THOMAS BAKER, M.D. had 17 opioid claims in 2023 with an opioid prescribing rate of 7.0%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does THOMAS BAKER, M.D. prescribe most often?
Based on 2023 Medicare Part D data, THOMAS BAKER, M.D.'s most frequently prescribed drugs include Rosuvastatin Calcium, Amlodipine Besylate, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does THOMAS BAKER, M.D. accept Medicare?
THOMAS BAKER, M.D. appears in CMS Medicare data with 243 Part D claims and 95 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify THOMAS BAKER, M.D.'s credentials?
THOMAS BAKER, M.D.'s NPI is 1851824429 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