2026 NPPES data Nephrology Physician NPI 1235123621 D.O.
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DONALD HAMMONDS, D.O.

Nephrology Physician in ASHLAND, Kentucky. 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.
What the federal data reveals: DONALD HAMMONDS, D.O. is a Nephrology Physician ([object Object]) practicing in ASHLAND, Kentucky .

What stands out: DONALD HAMMONDS, D.O. specializes in Nephrology Physician and practices in ASHLAND, Kentucky, listed in the federal CMS National Provider Identifier registry. Every detail on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

DONALD HAMMONDS, D.O. 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).

DONALD HAMMONDS, D.O. at a glance

Quality data not reported

NPI registry status

Active

Issued 08/31/2005

NPI 1235123621

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Specialty distribution in Kentucky

How Nephrology Physician compares to other specialties among Kentucky providers

Kentucky providers

Nephrology Physician share within Kentucky

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

Specialty board-certification context

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

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

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

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

DONALD HAMMONDS, D.O. is a Nephrology Physician provider practicing in ASHLAND, Kentucky, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.O.. NPI: 1235123621. 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.

DONALD HAMMONDS, D.O. appears in the CMS NPPES registry as a Nephrology Physician provider holding D.O. credentials at 613 23RD ST STE 130, ASHLAND, KY, 41101, with a listed phone of (606) 329-9335. NPI 1235123621 was issued on 08/31/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HAMMONDS 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 prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal — many Nephrology Physician providers operate outside Part D entirely.

Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 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

613 23RD ST STE 130
ASHLAND, KY 41101

Provider Details

NPI 1235123621
Specialty Nephrology Physician
Credentials D.O.
Gender Male
NPI Issued 08/31/2005

Nephrology Physician Overview

How DONALD HAMMONDS, D.O. fits within the Nephrology Physician landscape nationally.

10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider

Nearby Nephrology Physician Providers in Kentucky

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

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

Frequently Asked Questions

What is DONALD HAMMONDS, D.O.'s specialty?
DONALD HAMMONDS, D.O. specializes in Nephrology Physician and practices in ASHLAND, Kentucky. Credentials: D.O..
Where is DONALD HAMMONDS, D.O. located?
DONALD HAMMONDS, D.O. is located at 613 23RD ST STE 130, ASHLAND, KY, 41101. Phone: (606) 329-9335.
What is DONALD HAMMONDS, D.O.'s NPI number?
DONALD HAMMONDS, D.O.'s National Provider Identifier (NPI) is 1235123621, issued on 08/31/2005.
How many Nephrology Physician providers are there in the US?
There are 10,534 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
Does DONALD HAMMONDS, D.O. accept Medicare?
DONALD HAMMONDS, D.O. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DONALD HAMMONDS, D.O.'s credentials?
DONALD HAMMONDS, D.O.'s NPI is 1235123621 with credentials D.O.. 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.
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