2026 NPPES data Rheumatology Physician NPI 1477530301 M.D.
Verify on CMS →

JAMES BAKER, M.D.

Rheumatology Physician in JOHNSON CITY, Tennessee. 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
2K
Medicare Part D claims · 272 beneficiaries · Rheumatology Physician avg: 2K
Industry payments
$2.4K
121 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

JAMES BAKER, M.D. filed 1,833 Medicare Part D claims in 2023 as a Rheumatology Physician in JOHNSON CITY, Tennessee.

2K
Part D claims, 2023
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.

JAMES BAKER, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

1,833 Top 17% higher than 83% 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%). This entry sits in this band. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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)

JAMES BAKER, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — 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 JAMES BAKER, M.D.?

Quality data not reported

NPI registry status

Active

Issued 12/30/2005

NPI 1477530301

Primary specialty

Rheumatology Physician

Mid-sized

6,181 US NPIs in this specialty

Medicare Part D claims

1,833 11% vs specialty avg

2023 prescription claims

Specialty avg: 2,054

Specialty distribution in Tennessee

How Rheumatology Physician compares to other specialties among Tennessee providers

Tennessee providers

Rheumatology Physician share within Tennessee

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

Specialty board-certification context

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

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

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

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

JAMES BAKER, M.D. appears in the CMS NPPES registry as a Rheumatology Physician provider holding M.D. credentials at 303 MED TECH PKWY, JOHNSON CITY, TN, 37604, with a listed phone of (423) 794-3040. NPI 1477530301 was issued on 12/30/2005. 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 1,833 prescription claims written by this provider, covering 272 Medicare beneficiaries and totaling roughly $2.3 million in drug spend. 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.

Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 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

303 MED TECH PKWY
JOHNSON CITY, TN 37604

Provider Details

NPI 1477530301
Specialty Rheumatology Physician
Credentials M.D.
Gender Male
NPI Issued 12/30/2005

Hospital and facility affiliations

Facilities where JAMES 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.

MEDICAL EDUCATION ASSISTANCE CORPORATION
JOHNSON CITY, TN
STATE OF FRANKLIN HEALTHCARE ASSOCIATES, PLLC
JOHNSON CITY, 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 JAMES BAKER, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$2.4K

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.

Medicare Part D Prescribing Data

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

1,833
Total Claims
$2.3M
Total Drug Cost
272
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,952
Total Day Supply
85,466
Generic Drug Cost
$53K
Antibiotic Claims
11

Patient Demographics

Average Patient Age
69.8 years
Avg HCC Risk Score
1.68
Gender Split
67% female / 33% male
Age Distribution
<65: 64, 65-74: 114, 75-84: 79, 85+: 15

Top Prescribed Drugs (Medicare Part D)

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

What JAMES BAKER, M.D. 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
Hydroxychloroquine Sulfate
514
Methotrexate
Methotrexate Sodium
378
Prednisone
197
Folic Acid
99
Humira(Cf) Pen
Adalimumab
91
Leflunomide
62
Xeljanz Xr
Tofacitinib Citrate
55
Enbrel Sureclick
Etanercept
50
Allopurinol
26
Enbrel
Etanercept
21

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

Rheumatology Physician Overview

How JAMES BAKER, M.D. fits within the Rheumatology Physician landscape nationally.

6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider

JAMES BAKER, M.D.'s 1,833 claims are below the specialty average of 2,054.

Nearby Rheumatology Physician Providers in Tennessee

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

Compare Rheumatology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JAMES BAKER, M.D.'s specialty?
JAMES BAKER, M.D. specializes in Rheumatology Physician and practices in JOHNSON CITY, Tennessee. Credentials: M.D..
How much does JAMES BAKER, M.D. prescribe under Medicare Part D?
In 2023, JAMES BAKER, M.D. wrote 1,833 Medicare Part D claims totaling $2.3M in drug costs for 272 beneficiaries.
Where is JAMES BAKER, M.D. located?
JAMES BAKER, M.D. is located at 303 MED TECH PKWY, JOHNSON CITY, TN, 37604. Phone: (423) 794-3040.
What is JAMES BAKER, M.D.'s NPI number?
JAMES BAKER, M.D.'s National Provider Identifier (NPI) is 1477530301, issued on 12/30/2005.
How many Rheumatology Physician providers are there in the US?
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does JAMES BAKER, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JAMES BAKER, M.D.'s most frequently prescribed drugs include Hydroxychloroquine Sulfate, Methotrexate, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JAMES BAKER, M.D. accept Medicare?
JAMES BAKER, M.D. appears in CMS Medicare data with 1,833 Part D claims and 272 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JAMES BAKER, M.D.'s credentials?
JAMES BAKER, M.D.'s NPI is 1477530301 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