2026 NPPES data Internal Medicine Physician NPI 1588655021 M.D.
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EDWIN ANDERSON, M.D.

Internal Medicine Physician in NASHVILLE, 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
7K
Medicare Part D claims · 301 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: EDWIN ANDERSON, M.D. is a Internal Medicine Physician ([object Object]) practicing in NASHVILLE, Tennessee with a Medicare Part D prescribing footprint of 7K claims across 301 beneficiaries — 14% brand-name prescribing .

What stands out: EDWIN ANDERSON, M.D. filed 6,921 Medicare Part D claims in 2023 across NASHVILLE, Tennessee. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

EDWIN ANDERSON, M.D. 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).

EDWIN ANDERSON, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 11/03/2005

NPI 1588655021

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

6,921 155% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Tennessee

How Internal Medicine Physician compares to other specialties among Tennessee providers

Tennessee providers

Internal Medicine Physician share within Tennessee

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

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).

EDWIN ANDERSON, M.D. is a Internal Medicine Physician provider practicing in NASHVILLE, Tennessee, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1588655021. 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.

EDWIN ANDERSON, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 4230 HARDING PIKE STE 501, NASHVILLE, TN, 37205, with a listed phone of (629) 255-2131. NPI 1588655021 was issued on 11/03/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ANDERSON 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 6,921 prescription claims written by this provider, covering 301 Medicare beneficiaries and totaling roughly $899K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 5.1%. 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

4230 HARDING PIKE STE 501
NASHVILLE, TN 37205

Provider Details

NPI 1588655021
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 11/03/2005

Brand vs generic prescribing mix · Typical

EDWIN ANDERSON, M.D. — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 6,921 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.

6,921
Total Claims
$899K
Total Drug Cost
301
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
14,095
Total Day Supply
394,387
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$755K
Generic Drug Cost
$143K
Opioid Claims
354 (5.1% rate)
Antibiotic Claims
381

Patient Demographics

Average Patient Age
78.2 years
Avg HCC Risk Score
1.03
Gender Split
51% female / 49% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
297
Rosuvastatin Calcium
271
Amlodipine Besylate
208
Losartan Potassium
177
Levothyroxine Sodium
173
Metoprolol Succinate
159
Tramadol Hcl
144
Gabapentin
141
Lisinopril
139
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
137

* 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 EDWIN ANDERSON, 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

EDWIN ANDERSON, M.D.'s 6,921 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Tennessee

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

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

Frequently Asked Questions

What is EDWIN ANDERSON, M.D.'s specialty?
EDWIN ANDERSON, M.D. specializes in Internal Medicine Physician and practices in NASHVILLE, Tennessee. Credentials: M.D..
How much does EDWIN ANDERSON, M.D. prescribe under Medicare Part D?
In 2023, EDWIN ANDERSON, M.D. wrote 6,921 Medicare Part D claims totaling $899K in drug costs for 301 beneficiaries.
Where is EDWIN ANDERSON, M.D. located?
EDWIN ANDERSON, M.D. is located at 4230 HARDING PIKE STE 501, NASHVILLE, TN, 37205. Phone: (629) 255-2131.
What is EDWIN ANDERSON, M.D.'s NPI number?
EDWIN ANDERSON, M.D.'s National Provider Identifier (NPI) is 1588655021, issued on 11/03/2005.
Does EDWIN ANDERSON, M.D. prescribe more brand-name or generic drugs?
EDWIN ANDERSON, M.D.'s prescribing is 14% brand-name and 86% generic drugs by claim count, with $755K in brand drug costs.
Does EDWIN ANDERSON, M.D. prescribe opioids?
Yes, EDWIN ANDERSON, M.D. had 354 opioid claims in 2023 with an opioid prescribing rate of 5.1%.
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 EDWIN ANDERSON, M.D. prescribe most often?
Based on 2023 Medicare Part D data, EDWIN ANDERSON, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Rosuvastatin Calcium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does EDWIN ANDERSON, M.D. accept Medicare?
EDWIN ANDERSON, M.D. appears in CMS Medicare data with 6,921 Part D claims and 301 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify EDWIN ANDERSON, M.D.'s credentials?
EDWIN ANDERSON, M.D.'s NPI is 1588655021 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