2026 NPPES data Internal Medicine Physician NPI 1467436451 M.D.
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James Warren, M.D.

Internal Medicine Physician in Newnan, Georgia. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,858 in Internal 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
437
Medicare Part D claims · 160 beneficiaries · Internal Medicine Physician avg: 3K
MIPS score
90.8/100
▲ 8 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

James Warren, M.D. reported a CMS MIPS final score of 90.8/100 - above the 83.1 national average - and filed 437 Medicare Part D claims in 2023.

90.8/100
MIPS score · +8 vs avg
437
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 Warren, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure

91 Top 40% higher than 60% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90+: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored 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.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where James Warren, M.D. sits

This provider among internal medicine physician peers

Across the 36,260 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, James Warren, M.D. writes more Part D claims than 41% of them and scores higher on MIPS quality than 61% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 25Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 80James Warren, M.D.-Part D claim volume, percentile in specialty: 41 · MIPS quality, percentile: 61
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one internal medicine physician peer from a representative sample of 60; the gold marker is James Warren, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

Board certification likely (heuristic, not verified)

James Warren, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Warren, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 12/02/2005

NPI 1467436451

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

437 84% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

MIPS final score

90.8/100 7.7 pts vs avg

Exceptional band

vs 83.1 national avg

Specialty distribution in Georgia

How Internal Medicine Physician compares to other specialties among Georgia providers

Georgia providers

Largest specialties in Georgia (% of in-state providers)

Behavior Technician - 7.3%Behavior Technician7.3%Pharmacist - 5.1%Pharmacist5.1%Student in an Organized Health Care Education/Training Program - 5%Student in an Organized Health Care Education/Training Program5%Family Nurse Practitioner - 4.8%Family Nurse Practitioner4.8%Physical Therapist - 3.9%Physical Therapist3.9%Professional Counselor - 3.6%Professional Counselor3.6%Internal Medicine Physician - 2.8%Internal Medicine Physician2.8%
Largest specialties in Georgia (% of in-state providers)

Medicare quality performance, MIPS

James Warren, M.D.'s 2023 MIPS final score plotted against the Internal Medicine Physician national average

High performer (top quartile)
MIPS Final Score
90.8/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Internal Medicine Physician) - 90.8/100 vs national avg 83.1

0%100%National avg83%90.8%
MIPS final score (Internal Medicine Physician) - 90.8/100 vs national avg 83.1

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 Warren, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 15 CAVENDER ST, Newnan, GA, 30263, with a listed phone of (770) 254-6150. NPI 1467436451 was issued on 12/02/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Warren 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 437 prescription claims written by this provider, covering 160 Medicare beneficiaries and totaling roughly $39K 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 90.8/100 for the 2023 performance year, compared with the national average of 83.1.

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

15 CAVENDER ST
Newnan, GA 30263

Provider Details

NPI 1467436451
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 12/02/2005

CMS Quality Score (MIPS)

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

90.8
Final Score
Avg: 83.1
98
Promoting Interoperability

Reporting: Group practice

Medicare Part D Prescribing Data

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

437
Total Claims
$39K
Total Drug Cost
160
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,048
Total Day Supply
31,307
Generic Drug Cost
$4K

Patient Demographics

Average Patient Age
73.7 years
Avg HCC Risk Score
1.20
Gender Split
58% female / 42% male
Age Distribution
<65: 14, 65-74: 66, 75-84: 69, 85+: 11

Top Prescribed Drugs (Medicare Part D)

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

What James Warren, 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
Amlodipine Besylate
41
Atorvastatin Calcium
28
Metformin Hcl
22
Lisinopril
20
Losartan Potassium
14
Omeprazole
14
Hydrochlorothiazide
13
Levothyroxine Sodium
13
Alendronate Sodium
12
Allopurinol
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 James Warren, 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

James Warren, M.D.'s 437 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Georgia

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

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Georgia medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Internal Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is James Warren, M.D.'s specialty?
James Warren, M.D. specializes in Internal Medicine Physician and practices in Newnan, Georgia. Credentials: M.D..
How much does James Warren, M.D. prescribe under Medicare Part D?
In 2023, James Warren, M.D. wrote 437 Medicare Part D claims totaling $39K in drug costs for 160 beneficiaries.
What is James Warren, M.D.'s Medicare quality score?
James Warren, M.D. has a CMS MIPS Final Score of 90.8/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is James Warren, M.D. located?
James Warren, M.D. is located at 15 CAVENDER ST, Newnan, GA, 30263. Phone: (770) 254-6150.
What is James Warren, M.D.'s NPI number?
James Warren, M.D.'s National Provider Identifier (NPI) is 1467436451, issued on 12/02/2005.
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 James Warren, M.D. prescribe most often?
Based on 2023 Medicare Part D data, James Warren, M.D.'s most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does James Warren, M.D. accept Medicare?
James Warren, M.D. appears in CMS Medicare data with 437 Part D claims and 160 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify James Warren, M.D.'s credentials?
James Warren, M.D.'s NPI is 1467436451 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.
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 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

Compiled from official public sources by the PlainDoctor editorial team.