2026 NPPES data Nephrology Physician NPI 1811955156 DO
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THOMAS OZBIRN, DO

Nephrology Physician in HOMEWOOD, 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
643
Medicare Part D claims · 149 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 shows

THOMAS OZBIRN, DO filed 643 Medicare Part D claims in 2023 as a Nephrology Physician in HOMEWOOD, Alabama, prescribing 85% generic.

643
Part D claims, 2023
85%
generic prescribing

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.

THOMAS OZBIRN, DO's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

643 Top 31% higher than 69% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). This entry sits in this band. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

THOMAS OZBIRN, DO 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).

What does the federal data show about THOMAS OZBIRN, DO?

Quality data not reported

NPI registry status

Active

Issued 05/03/2006

NPI 1811955156

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

643 56% 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).

THOMAS OZBIRN, DO appears in the CMS NPPES registry as a Nephrology Physician provider holding DO credentials at 35 W LAKESHORE DR, HOMEWOOD, AL, 35209, with a listed phone of (205) 226-5900. NPI 1811955156 was issued on 05/03/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what OZBIRN 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 643 prescription claims written by this provider, covering 149 Medicare beneficiaries and totaling roughly $76K 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

35 W LAKESHORE DR
HOMEWOOD, AL 35209

Provider Details

NPI 1811955156
Specialty Nephrology Physician
Credentials DO
Gender Male
NPI Issued 05/03/2006

Brand vs generic prescribing mix · Typical

THOMAS OZBIRN, DO — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 643 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.

643
Total Claims
$76K
Total Drug Cost
149
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,372
Total Day Supply
40,866
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$64K
Generic Drug Cost
$13K

Patient Demographics

Average Patient Age
72.2 years
Avg HCC Risk Score
3.57
Gender Split
54% female / 46% male

Top Prescribed Drugs (Medicare Part D)

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

What THOMAS OZBIRN, DO 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
Calcitriol
64
Losartan Potassium
55
Farxiga
Dapagliflozin Propanediol
52
Allopurinol
34
Furosemide
34
Amlodipine Besylate
23
Spironolactone
21
Hydralazine Hcl
19
Chlorthalidone
18
Gabapentin
17

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

Nephrology Physician Overview

How THOMAS OZBIRN, DO 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

THOMAS OZBIRN, DO's 643 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 OZBIRN.

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

Frequently Asked Questions

What is THOMAS OZBIRN, DO's specialty?
THOMAS OZBIRN, DO specializes in Nephrology Physician and practices in HOMEWOOD, Alabama. Credentials: DO.
How much does THOMAS OZBIRN, DO prescribe under Medicare Part D?
In 2023, THOMAS OZBIRN, DO wrote 643 Medicare Part D claims totaling $76K in drug costs for 149 beneficiaries.
Where is THOMAS OZBIRN, DO located?
THOMAS OZBIRN, DO is located at 35 W LAKESHORE DR, HOMEWOOD, AL, 35209. Phone: (205) 226-5900.
What is THOMAS OZBIRN, DO's NPI number?
THOMAS OZBIRN, DO's National Provider Identifier (NPI) is 1811955156, issued on 05/03/2006.
Does THOMAS OZBIRN, DO prescribe more brand-name or generic drugs?
THOMAS OZBIRN, DO's prescribing is 15% brand-name and 85% generic drugs by claim count, with $64K 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 THOMAS OZBIRN, DO prescribe most often?
Based on 2023 Medicare Part D data, THOMAS OZBIRN, DO's most frequently prescribed drugs include Calcitriol, Losartan Potassium, Farxiga. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does THOMAS OZBIRN, DO accept Medicare?
THOMAS OZBIRN, DO appears in CMS Medicare data with 643 Part D claims and 149 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify THOMAS OZBIRN, DO's credentials?
THOMAS OZBIRN, DO's NPI is 1811955156 with credentials DO. 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