2026 NPPES data Neonatal-Perinatal Medicine Physician NPI 1457452740 MD
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MARIAN ADAMS, MD

Neonatal-Perinatal Medicine Physician in SAN JOSE, 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.
What the federal data reveals: MARIAN ADAMS, MD is a Neonatal-Perinatal Medicine Physician ([object Object]) practicing in SAN JOSE, California .

What stands out: MARIAN ADAMS, MD specializes in Neonatal-Perinatal Medicine Physician and practices in SAN JOSE, California, listed in the federal CMS National Provider Identifier registry. Every detail on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

MARIAN ADAMS, 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).

MARIAN ADAMS, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 09/26/2006

NPI 1457452740

Primary specialty

Neonatal-Perinatal Medicine Physician

Mid-sized

5,589 US NPIs in this specialty

Specialty distribution in California

How Neonatal-Perinatal Medicine Physician compares to other specialties among California providers

California providers

Neonatal-Perinatal Medicine Physician share within California

1. Neonatal-Perinatal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Neonatal-Perinatal Medicine Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Neonatal-Perinatal Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Neonatal-Perinatal Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Neonatal-Perinatal Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Neonatal-Perinatal 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).

MARIAN ADAMS, MD is a Neonatal-Perinatal Medicine Physician provider practicing in SAN JOSE, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1457452740. 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.

MARIAN ADAMS, MD appears in the CMS NPPES registry as a Neonatal-Perinatal Medicine Physician provider holding MD credentials at 751 S BASCOM AVE, SAN JOSE, CA, 95128, with a listed phone of (408) 805-5558. NPI 1457452740 was issued on 09/26/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ADAMS 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 prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal — many Neonatal-Perinatal Medicine Physician providers operate outside Part D entirely.

Neonatal-Perinatal Medicine Physician is a mid-sized specialty nationwide, with 5,589 enrolled providers across 52 states and an average of 56 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

751 S BASCOM AVE
SAN JOSE, CA 95128

Provider Details

NPI 1457452740
Specialty Neonatal-Perinatal Medicine Physician
Credentials MD
Gender Female
NPI Issued 09/26/2006

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 MARIAN ADAMS, MD. To verify MARIAN ADAMS, 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.

Neonatal-Perinatal Medicine Physician Overview

How MARIAN ADAMS, MD fits within the Neonatal-Perinatal Medicine Physician landscape nationally.

5,589
Neonatal-Perinatal Medicine Physician Providers in US
52
States with Neonatal-Perinatal Medicine Physician
56
Avg Claims per Provider

Nearby Neonatal-Perinatal Medicine Physician Providers in California

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

Compare Neonatal-Perinatal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARIAN ADAMS, MD's specialty?
MARIAN ADAMS, MD specializes in Neonatal-Perinatal Medicine Physician and practices in SAN JOSE, California. Credentials: MD.
Where is MARIAN ADAMS, MD located?
MARIAN ADAMS, MD is located at 751 S BASCOM AVE, SAN JOSE, CA, 95128. Phone: (408) 805-5558.
What is MARIAN ADAMS, MD's NPI number?
MARIAN ADAMS, MD's National Provider Identifier (NPI) is 1457452740, issued on 09/26/2006.
How many Neonatal-Perinatal Medicine Physician providers are there in the US?
There are 5,589 Neonatal-Perinatal Medicine Physician providers across 52 states in the US. The average Neonatal-Perinatal Medicine Physician provider writes 56 Medicare Part D claims per year.
Does MARIAN ADAMS, MD accept Medicare?
MARIAN ADAMS, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARIAN ADAMS, MD's credentials?
MARIAN ADAMS, MD's NPI is 1457452740 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.
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