2026 NPPES data Geriatric Medicine (Family Medicine) Physician NPI 1851356398 MD
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AUGUSTO BERTIZ, MD

Geriatric Medicine (Family Medicine) Physician in BAKERSFIELD, California. 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
12K
Medicare Part D claims · 541 beneficiaries · Geriatric Medicine (Family Medicine) Physician avg: 5K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: AUGUSTO BERTIZ, MD is a Geriatric Medicine (Family Medicine) Physician ([object Object]) practicing in BAKERSFIELD, California with a Medicare Part D prescribing footprint of 12K claims across 541 beneficiaries — 13% brand-name prescribing .

What stands out: AUGUSTO BERTIZ, MD filed 11,678 Medicare Part D claims in 2023 across BAKERSFIELD, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

AUGUSTO BERTIZ, MD 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).

AUGUSTO BERTIZ, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 04/18/2006

NPI 1851356398

Primary specialty

Geriatric Medicine (Family Medicine) Physician

Niche

1,779 US NPIs in this specialty

Medicare Part D claims

11,678 141% vs specialty avg

2023 prescription claims

Specialty avg: 4,854

Specialty distribution in California

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

California providers

Geriatric Medicine (Family Medicine) Physician share within California

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

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).

AUGUSTO BERTIZ, MD is a Geriatric Medicine (Family Medicine) Physician provider practicing in BAKERSFIELD, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1851356398. 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.

AUGUSTO BERTIZ, MD appears in the CMS NPPES registry as a Geriatric Medicine (Family Medicine) Physician provider holding MD credentials at 3551 Q ST, BAKERSFIELD, CA, 93301, with a listed phone of (661) 327-3747. NPI 1851356398 was issued on 04/18/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BERTIZ 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 11,678 prescription claims written by this provider, covering 541 Medicare beneficiaries and totaling roughly $467K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 4.8%. 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

3551 Q ST
BAKERSFIELD, CA 93301

Provider Details

NPI 1851356398
Specialty Geriatric Medicine (Family Medicine) Physician
Credentials MD
Gender Male
NPI Issued 04/18/2006

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 AUGUSTO BERTIZ, MD. To verify AUGUSTO BERTIZ, MD'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 · Typical

AUGUSTO BERTIZ, MD — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 11,678 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.

11,678
Total Claims
$467K
Total Drug Cost
541
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
17,193
Total Day Supply
386,847
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$247K
Generic Drug Cost
$219K
Opioid Claims
556 (4.8% rate)
Antibiotic Claims
215

Patient Demographics

Average Patient Age
78.9 years
Avg HCC Risk Score
2.01
Gender Split
59% female / 41% male
Age Distribution
<65: 14, 65-74: 139, 75-84: 234, 85+: 154

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
855
Levothyroxine Sodium
468
Furosemide
409
Lisinopril
351
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
317
Pantoprazole Sodium
316
Amlodipine Besylate
305
Famotidine
274
Gabapentin
247
Eliquis
Apixaban
221

* 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 AUGUSTO BERTIZ, MD 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

AUGUSTO BERTIZ, MD's 11,678 claims are above the specialty average of 4,854.

Nearby Geriatric Medicine (Family Medicine) Physician Providers in California

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

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

Frequently Asked Questions

What is AUGUSTO BERTIZ, MD's specialty?
AUGUSTO BERTIZ, MD specializes in Geriatric Medicine (Family Medicine) Physician and practices in BAKERSFIELD, California. Credentials: MD.
How much does AUGUSTO BERTIZ, MD prescribe under Medicare Part D?
In 2023, AUGUSTO BERTIZ, MD wrote 11,678 Medicare Part D claims totaling $467K in drug costs for 541 beneficiaries.
Where is AUGUSTO BERTIZ, MD located?
AUGUSTO BERTIZ, MD is located at 3551 Q ST, BAKERSFIELD, CA, 93301. Phone: (661) 327-3747.
What is AUGUSTO BERTIZ, MD's NPI number?
AUGUSTO BERTIZ, MD's National Provider Identifier (NPI) is 1851356398, issued on 04/18/2006.
Does AUGUSTO BERTIZ, MD prescribe more brand-name or generic drugs?
AUGUSTO BERTIZ, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $247K in brand drug costs.
Does AUGUSTO BERTIZ, MD prescribe opioids?
Yes, AUGUSTO BERTIZ, MD had 556 opioid claims in 2023 with an opioid prescribing rate of 4.8%.
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 AUGUSTO BERTIZ, MD prescribe most often?
Based on 2023 Medicare Part D data, AUGUSTO BERTIZ, MD's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AUGUSTO BERTIZ, MD accept Medicare?
AUGUSTO BERTIZ, MD appears in CMS Medicare data with 11,678 Part D claims and 541 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AUGUSTO BERTIZ, MD's credentials?
AUGUSTO BERTIZ, MD's NPI is 1851356398 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