2026 NPPES data Anatomic Pathology & Clinical Pathology Physician NPI 1093937708 M.D.
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RUBIO PUNZALAN, M.D.

Anatomic Pathology & Clinical Pathology Physician in SAN MARINO, 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
3K
Medicare Part D claims · 151 beneficiaries · Anatomic Pathology & Clinical Pathology Physician avg: 284
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$29.83
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

RUBIO PUNZALAN, M.D. filed 2,676 Medicare Part D claims in 2023 as a Anatomic Pathology & Clinical Pathology Physician in SAN MARINO, California, prescribing 88% generic.

3K
Part D claims, 2023
88%
generic prescribing
$29.83
industry payments (Sunshine Act)

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.

RUBIO PUNZALAN, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

2,676 Top 13% higher than 87% 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)

RUBIO PUNZALAN, M.D. 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 RUBIO PUNZALAN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 05/03/2007

NPI 1093937708

Primary specialty

Anatomic Pathology & Clinical Pathology Physician

Mid-sized

13,692 US NPIs in this specialty

Medicare Part D claims

2,676 842% vs specialty avg

2023 prescription claims

Specialty avg: 284

Specialty distribution in California

How Anatomic Pathology & Clinical Pathology Physician compares to other specialties among California providers

California providers

Anatomic Pathology & Clinical Pathology Physician share within California

1. Anatomic Pathology & Clinical Pathology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Anatomic Pathology & Clinical Pathology Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Anatomic Pathology & Clinical Pathology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Anatomic Pathology & Clinical Pathology Physician ABMS/AOA estimate

Est. board-certified rate (Anatomic Pathology & Clinical Pathology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Anatomic Pathology & Clinical Pathology 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).

RUBIO PUNZALAN, M.D. appears in the CMS NPPES registry as a Anatomic Pathology & Clinical Pathology Physician provider holding M.D. credentials at 1241 ENCINO DR, SAN MARINO, CA, 91108, with a listed phone of (626) 201-9893. NPI 1093937708 was issued on 05/03/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PUNZALAN 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 2,676 prescription claims written by this provider, covering 151 Medicare beneficiaries and totaling roughly $295K in drug spend, split 12% brand-name and 88% 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.

Anatomic Pathology & Clinical Pathology Physician is a mid-sized specialty nationwide, with 13,692 enrolled providers across 55 states and an average of 284 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

1241 ENCINO DR
SAN MARINO, CA 91108

Provider Details

NPI 1093937708
Specialty Anatomic Pathology & Clinical Pathology Physician
Credentials M.D.
Gender Male
NPI Issued 05/03/2007

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for RUBIO PUNZALAN, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$30

Largest payer

Amgen Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

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 RUBIO PUNZALAN, M.D.. To verify RUBIO PUNZALAN, M.D.'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

RUBIO PUNZALAN, M.D. — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 2,676 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.

2,676
Total Claims
$295K
Total Drug Cost
151
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,041
Total Day Supply
86,242
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$170K
Generic Drug Cost
$125K
Antibiotic Claims
34

Patient Demographics

Average Patient Age
77.7 years
Avg HCC Risk Score
2.06
Gender Split
62% female / 38% male
Age Distribution
<65: 12, 65-74: 53, 75-84: 41, 85+: 45

Top Prescribed Drugs (Medicare Part D)

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

What RUBIO PUNZALAN, M.D. 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
198
Atorvastatin Calcium
178
Levothyroxine Sodium
127
Metformin Hcl
100
Hydrochlorothiazide
86
Diclofenac Sodium
70
Tamsulosin Hcl
70
Omeprazole
62
Losartan Potassium
59
Rosuvastatin Calcium
52

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

Anatomic Pathology & Clinical Pathology Physician Overview

How RUBIO PUNZALAN, M.D. fits within the Anatomic Pathology & Clinical Pathology Physician landscape nationally.

13,692
Anatomic Pathology & Clinical Pathology Physician Providers in US
55
States with Anatomic Pathology & Clinical Pathology Physician
284
Avg Claims per Provider

RUBIO PUNZALAN, M.D.'s 2,676 claims are above the specialty average of 284.

Nearby Anatomic Pathology & Clinical Pathology Physician Providers in California

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

Compare Anatomic Pathology & Clinical Pathology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is RUBIO PUNZALAN, M.D.'s specialty?
RUBIO PUNZALAN, M.D. specializes in Anatomic Pathology & Clinical Pathology Physician and practices in SAN MARINO, California. Credentials: M.D..
How much does RUBIO PUNZALAN, M.D. prescribe under Medicare Part D?
In 2023, RUBIO PUNZALAN, M.D. wrote 2,676 Medicare Part D claims totaling $295K in drug costs for 151 beneficiaries.
Where is RUBIO PUNZALAN, M.D. located?
RUBIO PUNZALAN, M.D. is located at 1241 ENCINO DR, SAN MARINO, CA, 91108. Phone: (626) 201-9893.
What is RUBIO PUNZALAN, M.D.'s NPI number?
RUBIO PUNZALAN, M.D.'s National Provider Identifier (NPI) is 1093937708, issued on 05/03/2007.
Does RUBIO PUNZALAN, M.D. prescribe more brand-name or generic drugs?
RUBIO PUNZALAN, M.D.'s prescribing is 12% brand-name and 88% generic drugs by claim count, with $170K in brand drug costs.
How many Anatomic Pathology & Clinical Pathology Physician providers are there in the US?
There are 13,692 Anatomic Pathology & Clinical Pathology Physician providers across 55 states in the US. The average Anatomic Pathology & Clinical Pathology Physician provider writes 284 Medicare Part D claims per year.
What drugs does RUBIO PUNZALAN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, RUBIO PUNZALAN, M.D.'s most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does RUBIO PUNZALAN, M.D. accept Medicare?
RUBIO PUNZALAN, M.D. appears in CMS Medicare data with 2,676 Part D claims and 151 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify RUBIO PUNZALAN, M.D.'s credentials?
RUBIO PUNZALAN, M.D.'s NPI is 1093937708 with credentials M.D.. 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