2026 NPPES data Plastic Surgery Physician NPI 1164521605 M.D.
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ROGER FRIEDENTHAL, M.D.

Plastic Surgery Physician in SANTA ROSA, 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
86
Medicare Part D claims · 22 beneficiaries · Plastic Surgery Physician avg: 84
Industry payments
$327.23
8 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ROGER FRIEDENTHAL, M.D. filed 86 Medicare Part D claims in 2023 as a Plastic Surgery Physician in SANTA ROSA, California.

86
Part D claims, 2023
Likely
board-certified (heuristic)

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.

ROGER FRIEDENTHAL, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

86 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 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 certification likely (heuristic — not verified)

ROGER FRIEDENTHAL, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about ROGER FRIEDENTHAL, M.D.?

Quality data not reported

NPI registry status

Active

Issued 09/21/2006

NPI 1164521605

Primary specialty

Plastic Surgery Physician

Mid-sized

5,316 US NPIs in this specialty

Medicare Part D claims

86 2% vs specialty avg

2023 prescription claims

Specialty avg: 84

Specialty distribution in California

How Plastic Surgery Physician compares to other specialties among California providers

California providers

Plastic Surgery Physician share within California

1. Plastic Surgery Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Plastic Surgery Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Plastic Surgery Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Plastic Surgery Physician ABMS/AOA estimate

Est. board-certified rate (Plastic Surgery Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Plastic Surgery 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).

ROGER FRIEDENTHAL, M.D. is a Plastic Surgery Physician provider practicing in SANTA ROSA, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1164521605. 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.

ROGER FRIEDENTHAL, M.D. appears in the CMS NPPES registry as a Plastic Surgery Physician provider holding M.D. credentials at 3562 ROUND BARN CIR STE 320, SANTA ROSA, CA, 95403, with a listed phone of (707) 578-1900. NPI 1164521605 was issued on 09/21/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FRIEDENTHAL 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 86 prescription claims written by this provider, covering 22 Medicare beneficiaries and totaling roughly $1K in drug spend. 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.

Plastic Surgery Physician is a mid-sized specialty nationwide, with 5,316 enrolled providers across 52 states and an average of 84 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

3562 ROUND BARN CIR STE 320
SANTA ROSA, CA 95403

Provider Details

NPI 1164521605
Specialty Plastic Surgery Physician
Credentials M.D.
Gender Male
NPI Issued 09/21/2006

Hospital and facility affiliations

Facilities where ROGER FRIEDENTHAL, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

CSI MEDICAL GROUP
SAN FRANCISCO, CA
HYPERBARIC CONSULTANTS MEDICAL GROUP INC
SAN FRANCISCO, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 ROGER FRIEDENTHAL, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$327

Largest payer

Aroa Biosurgery Incorporated

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 ROGER FRIEDENTHAL, M.D.. To verify ROGER FRIEDENTHAL, 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

86
Total Claims
$1K
Total Drug Cost
22
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
89
Total Day Supply
1,281
Generic Drug Cost
$1K
Antibiotic Claims
57

Patient Demographics

Average Patient Age
71.4 years
Avg HCC Risk Score
2.72

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Cephalexin
29
Doxycycline Hyclate
13

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

Plastic Surgery Physician Overview

How ROGER FRIEDENTHAL, M.D. fits within the Plastic Surgery Physician landscape nationally.

5,316
Plastic Surgery Physician Providers in US
52
States with Plastic Surgery Physician
84
Avg Claims per Provider

ROGER FRIEDENTHAL, M.D.'s 86 claims are above the specialty average of 84.

Nearby Plastic Surgery Physician Providers in California

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

Compare Plastic Surgery Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ROGER FRIEDENTHAL, M.D.'s specialty?
ROGER FRIEDENTHAL, M.D. specializes in Plastic Surgery Physician and practices in SANTA ROSA, California. Credentials: M.D..
How much does ROGER FRIEDENTHAL, M.D. prescribe under Medicare Part D?
In 2023, ROGER FRIEDENTHAL, M.D. wrote 86 Medicare Part D claims totaling $1K in drug costs for 22 beneficiaries.
Where is ROGER FRIEDENTHAL, M.D. located?
ROGER FRIEDENTHAL, M.D. is located at 3562 ROUND BARN CIR STE 320, SANTA ROSA, CA, 95403. Phone: (707) 578-1900.
What is ROGER FRIEDENTHAL, M.D.'s NPI number?
ROGER FRIEDENTHAL, M.D.'s National Provider Identifier (NPI) is 1164521605, issued on 09/21/2006.
How many Plastic Surgery Physician providers are there in the US?
There are 5,316 Plastic Surgery Physician providers across 52 states in the US. The average Plastic Surgery Physician provider writes 84 Medicare Part D claims per year.
What drugs does ROGER FRIEDENTHAL, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ROGER FRIEDENTHAL, M.D.'s most frequently prescribed drugs include Cephalexin, Doxycycline Hyclate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROGER FRIEDENTHAL, M.D. accept Medicare?
ROGER FRIEDENTHAL, M.D. appears in CMS Medicare data with 86 Part D claims and 22 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROGER FRIEDENTHAL, M.D.'s credentials?
ROGER FRIEDENTHAL, M.D.'s NPI is 1164521605 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