2026 NPPES data Internal Medicine Physician NPI 1770003220 MD
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JOHN CLARK ALVES, MD

Internal Medicine Physician in GUNTERSVILLE, 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
369
Medicare Part D claims · 230 beneficiaries · Internal Medicine Physician avg: 3K
What the federal data reveals: JOHN CLARK ALVES, MD is a Internal Medicine Physician ([object Object]) practicing in GUNTERSVILLE, Alabama with a Medicare Part D prescribing footprint of 369 claims across 230 beneficiaries .

What stands out: JOHN CLARK ALVES, MD filed 369 Medicare Part D claims in 2023 across GUNTERSVILLE, Alabama. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

JOHN CLARK ALVES, MD 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).

JOHN CLARK ALVES, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 06/26/2017

NPI 1770003220

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

369 86% 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).

JOHN CLARK ALVES, MD is a Internal Medicine Physician provider practicing in GUNTERSVILLE, Alabama, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1770003220. 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.

JOHN CLARK ALVES, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 8000 AL HIGHWAY 69, GUNTERSVILLE, AL, 35976, with a listed phone of (256) 571-8000. NPI 1770003220 was issued on 06/26/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ALVES 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 369 prescription claims written by this provider, covering 230 Medicare beneficiaries and totaling roughly $7K in drug spend, with an opioid prescribing rate of 16.5%. 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

8000 AL HIGHWAY 69
GUNTERSVILLE, AL 35976

Provider Details

NPI 1770003220
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 06/26/2017

Hospital and facility affiliations

Facilities where JOHN CLARK ALVES, MD 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.

MARSHALL MEDICAL CENTER NORTH
GUNTERSVILLE, 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).

Medicare Part D Prescribing Data

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

369
Total Claims
$7K
Total Drug Cost
230
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
400
Total Day Supply
4,189
Generic Drug Cost
$4K
Opioid Claims
61 (16.5% rate)
Antibiotic Claims
115

Patient Demographics

Average Patient Age
69.7 years
Avg HCC Risk Score
1.59
Gender Split
63% female / 37% male
Age Distribution
<65: 60, 65-74: 85, 75-84: 66, 85+: 19

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
43
Ondansetron Odt
Ondansetron
38
Prednisone
38
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
29
Azithromycin
21
Doxycycline Hyclate
14
Potassium Chloride
13
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
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 JOHN CLARK ALVES, MD 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

JOHN CLARK ALVES, MD's 369 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 ALVES.

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

Frequently Asked Questions

What is JOHN CLARK ALVES, MD's specialty?
JOHN CLARK ALVES, MD specializes in Internal Medicine Physician and practices in GUNTERSVILLE, Alabama. Credentials: MD.
How much does JOHN CLARK ALVES, MD prescribe under Medicare Part D?
In 2023, JOHN CLARK ALVES, MD wrote 369 Medicare Part D claims totaling $7K in drug costs for 230 beneficiaries.
Where is JOHN CLARK ALVES, MD located?
JOHN CLARK ALVES, MD is located at 8000 AL HIGHWAY 69, GUNTERSVILLE, AL, 35976. Phone: (256) 571-8000.
What is JOHN CLARK ALVES, MD's NPI number?
JOHN CLARK ALVES, MD's National Provider Identifier (NPI) is 1770003220, issued on 06/26/2017.
Does JOHN CLARK ALVES, MD prescribe opioids?
Yes, JOHN CLARK ALVES, MD had 61 opioid claims in 2023 with an opioid prescribing rate of 16.5%.
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 JOHN CLARK ALVES, MD prescribe most often?
Based on 2023 Medicare Part D data, JOHN CLARK ALVES, MD's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Ondansetron Odt, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOHN CLARK ALVES, MD accept Medicare?
JOHN CLARK ALVES, MD appears in CMS Medicare data with 369 Part D claims and 230 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN CLARK ALVES, MD's credentials?
JOHN CLARK ALVES, MD's NPI is 1770003220 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