2026 NPPES data Geriatric Medicine (Family Medicine) Physician NPI 1326074246 D.O.
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WILLIAM TOBACK, D.O.

Geriatric Medicine (Family Medicine) Physician in WEST PALM BEACH, Florida. 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
4K
Medicare Part D claims · 392 beneficiaries · Geriatric Medicine (Family Medicine) Physician avg: 5K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

WILLIAM TOBACK, D.O. filed 3,936 Medicare Part D claims in 2023 as a Geriatric Medicine (Family Medicine) Physician in WEST PALM BEACH, Florida, prescribing 90% generic.

4K
Part D claims, 2023
90%
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.

WILLIAM TOBACK, D.O.'s Medicare Part D volume vs every U.S. prescriber

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

3,936 Top 9% higher than 91% 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%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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)

WILLIAM TOBACK, 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).

What does the federal data show about WILLIAM TOBACK, D.O.?

Quality data not reported

NPI registry status

Active

Issued 06/23/2006

NPI 1326074246

Primary specialty

Geriatric Medicine (Family Medicine) Physician

Niche

1,779 US NPIs in this specialty

Medicare Part D claims

3,936 19% vs specialty avg

2023 prescription claims

Specialty avg: 4,854

Specialty distribution in Florida

How Geriatric Medicine (Family Medicine) Physician compares to other specialties among Florida providers

Florida providers

Geriatric Medicine (Family Medicine) Physician share within Florida

1. Geriatric Medicine (Family Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Geriatric Medicine (Family Medicine) Physician share within Florida

Specialty board-certification context

Estimated specialty board-certified rate — Geriatric Medicine (Family Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Geriatric Medicine (Family Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Geriatric Medicine (Family Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Geriatric Medicine (Family 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).

WILLIAM TOBACK, D.O. appears in the CMS NPPES registry as a Geriatric Medicine (Family Medicine) Physician provider holding D.O. credentials at 1651 S CONGRESS AVE, WEST PALM BEACH, FL, 33406, with a listed phone of (561) 966-1000. NPI 1326074246 was issued on 06/23/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what TOBACK 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 3,936 prescription claims written by this provider, covering 392 Medicare beneficiaries and totaling roughly $229K in drug spend, split 10% brand-name and 90% 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.

Geriatric Medicine (Family Medicine) Physician is a narrow specialty nationwide, with 1,779 enrolled providers across 52 states and an average of 4,854 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

1651 S CONGRESS AVE
WEST PALM BEACH, FL 33406

Provider Details

NPI 1326074246
Specialty Geriatric Medicine (Family Medicine) Physician
Credentials D.O.
Gender Male
NPI Issued 06/23/2006

License & disciplinary context — Florida FLDOH 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~75K Florida medical licensees in 2023 — they are NOT specific to WILLIAM TOBACK, D.O.. To verify WILLIAM TOBACK, D.O.'s current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

480
Total board actions, Florida 2023
Across 467 cases
6.40
Actions per 1,000 licensees
Florida statewide rate
monetary fine
Most common action type
138 cases

FLDOH publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

WILLIAM TOBACK, D.O. — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 3,936 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.

3,936
Total Claims
$229K
Total Drug Cost
392
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,706
Total Day Supply
286,667
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$185K
Generic Drug Cost
$42K
Antibiotic Claims
57

Patient Demographics

Average Patient Age
77.3 years
Avg HCC Risk Score
1.95
Gender Split
51% female / 49% male
Age Distribution
<65: 26, 65-74: 139, 75-84: 128, 85+: 99

Top Prescribed Drugs (Medicare Part D)

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

What WILLIAM TOBACK, D.O. 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
Amlodipine Besylate
273
Atorvastatin Calcium
266
Rosuvastatin Calcium
209
Losartan Potassium
184
Levothyroxine Sodium
183
Lisinopril
165
Metoprolol Succinate
130
Pantoprazole Sodium
112
Simvastatin
93
Eliquis
Apixaban
87

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

Geriatric Medicine (Family Medicine) Physician Overview

How WILLIAM TOBACK, D.O. fits within the Geriatric Medicine (Family Medicine) Physician landscape nationally.

1,779
Geriatric Medicine (Family Medicine) Physician Providers in US
52
States with Geriatric Medicine (Family Medicine) Physician
4,854
Avg Claims per Provider

WILLIAM TOBACK, D.O.'s 3,936 claims are below the specialty average of 4,854.

Nearby Geriatric Medicine (Family Medicine) Physician Providers in Florida

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

Compare Geriatric Medicine (Family Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLIAM TOBACK, D.O.'s specialty?
WILLIAM TOBACK, D.O. specializes in Geriatric Medicine (Family Medicine) Physician and practices in WEST PALM BEACH, Florida. Credentials: D.O..
How much does WILLIAM TOBACK, D.O. prescribe under Medicare Part D?
In 2023, WILLIAM TOBACK, D.O. wrote 3,936 Medicare Part D claims totaling $229K in drug costs for 392 beneficiaries.
Where is WILLIAM TOBACK, D.O. located?
WILLIAM TOBACK, D.O. is located at 1651 S CONGRESS AVE, WEST PALM BEACH, FL, 33406. Phone: (561) 966-1000.
What is WILLIAM TOBACK, D.O.'s NPI number?
WILLIAM TOBACK, D.O.'s National Provider Identifier (NPI) is 1326074246, issued on 06/23/2006.
Does WILLIAM TOBACK, D.O. prescribe more brand-name or generic drugs?
WILLIAM TOBACK, D.O.'s prescribing is 10% brand-name and 90% generic drugs by claim count, with $185K in brand drug costs.
How many Geriatric Medicine (Family Medicine) Physician providers are there in the US?
There are 1,779 Geriatric Medicine (Family Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Family Medicine) Physician provider writes 4,854 Medicare Part D claims per year.
What drugs does WILLIAM TOBACK, D.O. prescribe most often?
Based on 2023 Medicare Part D data, WILLIAM TOBACK, D.O.'s most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Rosuvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILLIAM TOBACK, D.O. accept Medicare?
WILLIAM TOBACK, D.O. appears in CMS Medicare data with 3,936 Part D claims and 392 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLIAM TOBACK, D.O.'s credentials?
WILLIAM TOBACK, D.O.'s NPI is 1326074246 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.
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