2026 NPPES data Nephrology Physician NPI 1689162778 MD
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DAVID CORBIN, MD

Nephrology Physician in GADSDEN, 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
274
Medicare Part D claims · 144 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: DAVID CORBIN, MD is a Nephrology Physician ([object Object]) practicing in GADSDEN, Alabama with a Medicare Part D prescribing footprint of 274 claims across 144 beneficiaries — 15% brand-name prescribing .

What stands out: DAVID CORBIN, MD filed 274 Medicare Part D claims in 2023 across GADSDEN, Alabama. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

DAVID CORBIN, 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).

DAVID CORBIN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 04/25/2018

NPI 1689162778

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

274 81% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

Specialty distribution in Alabama

How Nephrology Physician compares to other specialties among Alabama providers

Alabama providers

Nephrology Physician share within Alabama

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

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).

DAVID CORBIN, MD is a Nephrology Physician provider practicing in GADSDEN, Alabama, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1689162778. 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.

DAVID CORBIN, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 1026 GOODYEAR AVE STE 302B, GADSDEN, AL, 35903, with a listed phone of (256) 485-0899. NPI 1689162778 was issued on 04/25/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CORBIN 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 274 prescription claims written by this provider, covering 144 Medicare beneficiaries and totaling roughly $26K in drug spend, split 15% brand-name and 85% generic by claim count. 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.

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

1026 GOODYEAR AVE STE 302B
GADSDEN, AL 35903

Provider Details

NPI 1689162778
Specialty Nephrology Physician
Credentials MD
Gender Male
NPI Issued 04/25/2018

Hospital and facility affiliations

Facilities where DAVID CORBIN, 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.

LIFEHEALTH PC
GADSDEN, 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).

Brand vs generic prescribing mix · Typical

DAVID CORBIN, MD — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 274 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.

274
Total Claims
$26K
Total Drug Cost
144
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
431
Total Day Supply
11,825
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$22K
Generic Drug Cost
$4K
Antibiotic Claims
22

Patient Demographics

Average Patient Age
73.6 years
Avg HCC Risk Score
2.18
Gender Split
43% female / 57% male
Age Distribution
<65: 19, 65-74: 51, 75-84: 56, 85+: 18

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Calcitriol
37
Farxiga
Dapagliflozin Propanediol
27
Furosemide
25
Lisinopril
22
Amlodipine Besylate
20
Allopurinol
17
Sps
Sodium Polystyrene Sulfon/Sorb
14
Cephalexin
13

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

Nephrology Physician Overview

How DAVID CORBIN, MD 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

DAVID CORBIN, MD's 274 claims are below the specialty average of 1,454.

Nearby Nephrology Physician Providers in Alabama

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

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

Frequently Asked Questions

What is DAVID CORBIN, MD's specialty?
DAVID CORBIN, MD specializes in Nephrology Physician and practices in GADSDEN, Alabama. Credentials: MD.
How much does DAVID CORBIN, MD prescribe under Medicare Part D?
In 2023, DAVID CORBIN, MD wrote 274 Medicare Part D claims totaling $26K in drug costs for 144 beneficiaries.
Where is DAVID CORBIN, MD located?
DAVID CORBIN, MD is located at 1026 GOODYEAR AVE STE 302B, GADSDEN, AL, 35903. Phone: (256) 485-0899.
What is DAVID CORBIN, MD's NPI number?
DAVID CORBIN, MD's National Provider Identifier (NPI) is 1689162778, issued on 04/25/2018.
Does DAVID CORBIN, MD prescribe more brand-name or generic drugs?
DAVID CORBIN, MD's prescribing is 15% brand-name and 85% generic drugs by claim count, with $22K in brand drug costs.
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.
What drugs does DAVID CORBIN, MD prescribe most often?
Based on 2023 Medicare Part D data, DAVID CORBIN, MD's most frequently prescribed drugs include Calcitriol, Farxiga, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DAVID CORBIN, MD accept Medicare?
DAVID CORBIN, MD appears in CMS Medicare data with 274 Part D claims and 144 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DAVID CORBIN, MD's credentials?
DAVID CORBIN, MD's NPI is 1689162778 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