NPI registry status
Active
2026 NPPES data Immunopathology Physician NPI 1467559526 D.O.
Verify on CMS → Daniel Brubaker, D.O.
Immunopathology Physician in Fresno, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 48 in Immunopathology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
560
Medicare Part D claims · 57 beneficiaries · Immunopathology Physician avg: 560
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Daniel Brubaker, D.O. filed 560 Medicare Part D claims in 2024 as an Immunopathology Physician in Fresno, California, prescribing 95% generic.
- 560
- Part D claims, 2024
- 95%
- generic prescribing
- ≥65th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Daniel Brubaker, D.O.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1467559526), first enumerated 09/20/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 560 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Daniel Brubaker, D.O.'s individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1467559526 · Immunopathology Physician
NPI-10 · ENUM-LEGACY · TAX-TRACE · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1467559526
- ENUM-LEGACY 2006
- TAX-TRACE 48
- RX-LIGHT 560
- BOOK-THIN 8 in California
- PHOTO-ENUM Rodney Miller, M.D. · 2006
Daniel Brubaker, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
560 ≥ 65th percentile 65% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Daniel Brubaker, 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 Daniel Brubaker, D.O.?
Quality data not reportedPrimary specialty
Immunopathology Physician
Medicare Part D claims
560 0% vs specialty avg
Specialty distribution in California
How Immunopathology Physician compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Immunopathology Physician. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1467559526 |
|---|---|
| Specialty | Immunopathology Physician |
| Credentials | D.O. |
| Gender | Male |
| NPI Issued | 09/20/2006 |
License & disciplinary context - California MBC 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 ~150K California medical licensees in 2023 - they are NOT specific to Daniel Brubaker, D.O.. To verify Daniel Brubaker, D.O.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Daniel Brubaker, D.O. - brand share 5.0%
5% brand-name claims vs 95% generic, on 560 2024 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 2024.
560
Total Claims
$11K
Total Drug Cost
57
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 818.867
- Total Day Supply
- 22,560
- Brand vs Generic
- 5% brand / 95% generic
- Brand Drug Cost
- $6K
- Generic Drug Cost
- $5K
- Opioid Claims
- 62 (11.1% rate)
- Antibiotic Claims
- 14
Patient Demographics
- Average Patient Age
- 66.1 years
- Avg HCC Risk Score
- 1.36
- Gender Split
- 58% female / 42% male
- Age Distribution
- <65: 20, 65-74: 28, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Daniel Brubaker, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Tramadol Hcl
Tramadol Hcl
38 claims
- Memantine Hcl
Memantine Hcl
35 claims
- Atorvastatin Calcium
Atorvastatin Calcium
32 claims
- Nortriptyline Hcl
Nortriptyline Hcl
32 claims
- Omeprazole
Omeprazole
28 claims
- Acetaminophen-Code…
Acetaminophen-Codeine
22 claims
- Hydrochlorothiazide
Hydrochlorothiazide
19 claims
- Ibuprofen
Ibuprofen
19 claims
| Drug | Claims |
|---|---|
| Tramadol Hcl | 38 |
| Memantine Hcl | 35 |
| Atorvastatin Calcium | 32 |
| Nortriptyline Hcl | 32 |
| Omeprazole | 28 |
| Acetaminophen-Codeine Acetaminophen With Codeine | 22 |
| Hydrochlorothiazide | 19 |
| Ibuprofen | 19 |
| Cyclobenzaprine Hcl | 16 |
| Gabapentin | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Immunopathology Physician Overview
How Daniel Brubaker, D.O. fits within the Immunopathology Physician landscape nationally.
48
Immunopathology Physician Providers in US
19
States with Immunopathology Physician
560
Avg Claims per Provider
Daniel Brubaker, D.O.'s 560 claims are below the specialty average of 560.
Nationwide Immunopathology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Brubaker, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Immunopathology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Brubaker.
One of 8 Immunopathology Physician providers enrolled in California, 5 are shown here.
Dr. Robin Baker
MD
San Francisco, CA
Dr. Debra Hawes
M.D.
Los Angeles, CA
Dr. Wen Jing
MD
San Francisco, CA
Dr. Donna Kell
MD
Santa Barbara, CA
Dr. Beerelli Seshi
M.D.
Torrance, CA
Compare Immunopathology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Daniel Brubaker, D.O.'s specialty? ▼
Daniel Brubaker, D.O. specializes in Immunopathology Physician and practices in Fresno, California. Credentials: D.O..
How much does Daniel Brubaker, D.O. prescribe under Medicare Part D? ▼
In 2024, Daniel Brubaker, D.O. wrote 560 Medicare Part D claims totaling $11K in drug costs for 57 beneficiaries.
Where is Daniel Brubaker, D.O. located? ▼
Daniel Brubaker, D.O. is located at 3726 N 1ST ST, Fresno, CA, 93726. Phone: (559) 248-0116.
What is Daniel Brubaker, D.O.'s NPI number? ▼
Daniel Brubaker, D.O.'s National Provider Identifier (NPI) is 1467559526, issued on 09/20/2006.
Does Daniel Brubaker, D.O. prescribe more brand-name or generic drugs? ▼
Daniel Brubaker, D.O.'s prescribing is 5% brand-name and 95% generic drugs by claim count, with $6K in brand drug costs.
Does Daniel Brubaker, D.O. prescribe opioids? ▼
Yes, Daniel Brubaker, D.O. had 62 opioid claims in 2024 with an opioid prescribing rate of 11.1%.
How many Immunopathology Physician providers are there in the US? ▼
There are 48 Immunopathology Physician providers across 19 states in the US. The average Immunopathology Physician provider writes 560 Medicare Part D claims per year.
What drugs does Daniel Brubaker, D.O. prescribe most often? ▼
Based on 2024 Medicare Part D data, Daniel Brubaker, D.O.'s most frequently prescribed drugs include Tramadol Hcl, Memantine Hcl, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Daniel Brubaker, D.O. accept Medicare? ▼
Daniel Brubaker, D.O. appears in CMS Medicare data with 560 Part D claims and 57 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Daniel Brubaker, D.O.'s credentials? ▼
Daniel Brubaker, D.O.'s NPI is 1467559526 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
View source datasets and methodology notes
- 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.