2026 NPPES data Nuclear Radiology Physician NPI 1376645200 M.D,
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CYRUS SAFAI, M.D,

Nuclear Radiology Physician in ATHERTON, 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
11
Medicare Part D claims · Nuclear Radiology Physician avg: 1K
What the federal data reveals: CYRUS SAFAI, M.D, is a Nuclear Radiology Physician ([object Object]) practicing in ATHERTON, California with a Medicare Part D prescribing footprint of 11 claims .

What stands out: CYRUS SAFAI, M.D, filed 11 Medicare Part D claims in 2023 across ATHERTON, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

CYRUS SAFAI, 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).

CYRUS SAFAI, M.D, at a glance

Quality data not reported

NPI registry status

Active

Issued 09/01/2006

NPI 1376645200

Primary specialty

Nuclear Radiology Physician

Niche

664 US NPIs in this specialty

Medicare Part D claims

11 99% vs specialty avg

2023 prescription claims

Specialty avg: 1,000

Specialty distribution in California

How Nuclear Radiology Physician compares to other specialties among California providers

California providers

Nuclear Radiology Physician share within California

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

Specialty board-certification context

Estimated specialty board-certified rate — Nuclear Radiology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Nuclear Radiology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Nuclear Radiology 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).

CYRUS SAFAI, M.D, is a Nuclear Radiology Physician provider practicing in ATHERTON, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D,. NPI: 1376645200. 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.

CYRUS SAFAI, M.D, appears in the CMS NPPES registry as a Nuclear Radiology Physician provider holding M.D, credentials at 37 IRVING AVE, ATHERTON, CA, 94027, with a listed phone of (650) 324-2499. NPI 1376645200 was issued on 09/01/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SAFAI 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 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $3K 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.

Nuclear Radiology Physician is a narrow specialty nationwide, with 664 enrolled providers across 51 states and an average of 1,000 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

37 IRVING AVE
ATHERTON, CA 94027

Provider Details

NPI 1376645200
Specialty Nuclear Radiology Physician
Credentials M.D,
Gender Male
NPI Issued 09/01/2006

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 CYRUS SAFAI, M.D,. To verify CYRUS SAFAI, 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.

11
Total Claims
$3K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
33
Total Day Supply
990

Patient Demographics

Average Patient Age
80.0 years
Avg HCC Risk Score
0.50

Nuclear Radiology Physician Overview

How CYRUS SAFAI, M.D, fits within the Nuclear Radiology Physician landscape nationally.

664
Nuclear Radiology Physician Providers in US
51
States with Nuclear Radiology Physician
1,000
Avg Claims per Provider

CYRUS SAFAI, M.D,'s 11 claims are below the specialty average of 1,000.

Nearby Nuclear Radiology Physician Providers in California

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

Compare Nuclear Radiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CYRUS SAFAI, M.D,'s specialty?
CYRUS SAFAI, M.D, specializes in Nuclear Radiology Physician and practices in ATHERTON, California. Credentials: M.D,.
How much does CYRUS SAFAI, M.D, prescribe under Medicare Part D?
In 2023, CYRUS SAFAI, M.D, wrote 11 Medicare Part D claims totaling $3K in drug costs for N/A beneficiaries.
Where is CYRUS SAFAI, M.D, located?
CYRUS SAFAI, M.D, is located at 37 IRVING AVE, ATHERTON, CA, 94027. Phone: (650) 324-2499.
What is CYRUS SAFAI, M.D,'s NPI number?
CYRUS SAFAI, M.D,'s National Provider Identifier (NPI) is 1376645200, issued on 09/01/2006.
How many Nuclear Radiology Physician providers are there in the US?
There are 664 Nuclear Radiology Physician providers across 51 states in the US. The average Nuclear Radiology Physician provider writes 1,000 Medicare Part D claims per year.
Does CYRUS SAFAI, M.D, accept Medicare?
CYRUS SAFAI, M.D, appears in CMS Medicare data with 11 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CYRUS SAFAI, M.D,'s credentials?
CYRUS SAFAI, M.D,'s NPI is 1376645200 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