NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1609140524 MD
Verify on CMS → Tiffany Herrero, MD
Obstetrics & Gynecology Physician in Palo Alto, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 45,074 in Obstetrics & Gynecology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
What the federal data shows
Tiffany Herrero, MD is an Obstetrics & Gynecology Physician in Palo Alto, California, listed in the federal CMS National Provider Identifier registry.
- Likely
- board-certified (heuristic)
- #39
- Obstetrics & Gynecology Physician rank among California specialties
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.
Federal trust snapshot
What official records show about Tiffany Herrero, MD
Federal registry listing with board-eligibility signals — verify credentials with the state medical board before clinical decisions.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1609140524), first enumerated 02/24/2012.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Tiffany Herrero, MD's individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1609140524 · Obstetrics & Gynecology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-NONE · BOOK-MID · PHOTO-ENUM
- NPI-10 1609140524
- ENUM-MID 2012
- TAX-MID 45K Obstetrics &
- RX-NONE No Part D
- BOOK-MID 5,004 in California
- PHOTO-ENUM Rose Laignel · 2012
✓
Board certification likely (heuristic, not verified)
Tiffany Herrero, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Tiffany Herrero, MD?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Specialty distribution in California
How Obstetrics & Gynecology Physician compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Obstetrics & Gynecology Physician. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1609140524 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 02/24/2012 |
Hospital and facility affiliations
Facilities where Tiffany Herrero, MD 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.
EL Camino Health Medical Network LLC
Mountain View, 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).
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 Tiffany Herrero, MD. To verify Tiffany Herrero, 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.
Obstetrics & Gynecology Physician Overview
How Tiffany Herrero, MD fits within the Obstetrics & Gynecology Physician landscape nationally.
45,074
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
188
Avg Claims per Provider
Nationwide Obstetrics & Gynecology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Herrero, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2012)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Obstetrics & Gynecology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Herrero.
One of 5,004 Obstetrics & Gynecology Physician providers enrolled in California, 5 are shown here.
Dr. Ingrid Aalami
MD
San Jose, CA
Dr. Avisa Abaian- Eagar
M.D.
Orange, CA
Dr. Derek Abbassi
MD
Walnut Creek, CA
Dr. Nicole Abell
DO
Ventura, CA
Zachary Abelson
Los Angeles, CA
Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Tiffany Herrero, MD's specialty? ▼
Tiffany Herrero, MD specializes in Obstetrics & Gynecology Physician and practices in Palo Alto, California. Credentials: MD.
Where is Tiffany Herrero, MD located? ▼
Tiffany Herrero, MD is located at 300 PASTEUR DR, Palo Alto, CA, 94305. Phone: (650) 723-4000.
What is Tiffany Herrero, MD's NPI number? ▼
Tiffany Herrero, MD's National Provider Identifier (NPI) is 1609140524, issued on 02/24/2012.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 45,074 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 188 Medicare Part D claims per year.
Does Tiffany Herrero, MD accept Medicare? ▼
Tiffany Herrero, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tiffany Herrero, MD's credentials? ▼
Tiffany Herrero, MD's NPI is 1609140524 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
View source datasets and methodology notes
- 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.