2026 NPPES data Obstetrics & Gynecology Physician NPI 1538231337 MD
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DARCY BAIRD, MD

Obstetrics & Gynecology Physician in ANTIOCH, 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
367
Medicare Part D claims · 153 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

DARCY BAIRD, MD filed 367 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in ANTIOCH, California, prescribing 81% generic.

367
Part D claims, 2023
81%
generic prescribing
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.

DARCY BAIRD, MD's Medicare Part D volume vs every U.S. prescriber

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

367 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 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)

DARCY BAIRD, 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 DARCY BAIRD, MD?

Quality data not reported

NPI registry status

Active

Issued 11/15/2006

NPI 1538231337

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

367 105% vs specialty avg

2023 prescription claims

Specialty avg: 179

Specialty distribution in California

How Obstetrics & Gynecology Physician compares to other specialties among California providers

California providers

Obstetrics & Gynecology Physician share within California

1. Obstetrics & Gynecology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Obstetrics & Gynecology Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Obstetrics & Gynecology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Obstetrics & Gynecology Physician ABMS/AOA estimate

Est. board-certified rate (Obstetrics & Gynecology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Obstetrics & Gynecology 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).

DARCY BAIRD, MD is a Obstetrics & Gynecology Physician provider practicing in ANTIOCH, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1538231337. 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.

DARCY BAIRD, MD appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding MD credentials at 5601 DEER VALLEY RD, ANTIOCH, CA, 94531, with a listed phone of (925) 813-6500. NPI 1538231337 was issued on 11/15/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BAIRD 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 367 prescription claims written by this provider, covering 153 Medicare beneficiaries and totaling roughly $52K in drug spend, split 19% brand-name and 81% 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.

Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,313 enrolled providers across 56 states and an average of 179 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

5601 DEER VALLEY RD
ANTIOCH, CA 94531

Provider Details

NPI 1538231337
Specialty Obstetrics & Gynecology Physician
Credentials MD
Gender Female
NPI Issued 11/15/2006

Hospital and facility affiliations

Facilities where DARCY BAIRD, 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.

PERMANENTE MEDICAL GROUP INC
LIVERMORE, 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 DARCY BAIRD, MD. To verify DARCY BAIRD, 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.

Brand vs generic prescribing mix · Typical

DARCY BAIRD, MD — brand share 19.0%
Specialty average (est.)

19% brand-name claims vs 81% generic, on 367 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.

367
Total Claims
$52K
Total Drug Cost
153
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
940
Total Day Supply
26,676
Brand vs Generic
19% brand / 81% generic
Brand Drug Cost
$36K
Generic Drug Cost
$16K
Antibiotic Claims
17

Patient Demographics

Average Patient Age
72.7 years
Avg HCC Risk Score
0.81
Gender Split
100% female / 0% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Yuvafem
Estradiol
91
Estradiol
62
Estring
Estradiol
58
Acyclovir
23
Fluconazole
21
Trospium Chloride
18
Gabapentin
16
Clobetasol Propionate
14
Cephalexin
12

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

Obstetrics & Gynecology Physician Overview

How DARCY BAIRD, MD fits within the Obstetrics & Gynecology Physician landscape nationally.

44,313
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider

DARCY BAIRD, MD's 367 claims are above the specialty average of 179.

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 BAIRD.

Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is DARCY BAIRD, MD's specialty?
DARCY BAIRD, MD specializes in Obstetrics & Gynecology Physician and practices in ANTIOCH, California. Credentials: MD.
How much does DARCY BAIRD, MD prescribe under Medicare Part D?
In 2023, DARCY BAIRD, MD wrote 367 Medicare Part D claims totaling $52K in drug costs for 153 beneficiaries.
Where is DARCY BAIRD, MD located?
DARCY BAIRD, MD is located at 5601 DEER VALLEY RD, ANTIOCH, CA, 94531. Phone: (925) 813-6500.
What is DARCY BAIRD, MD's NPI number?
DARCY BAIRD, MD's National Provider Identifier (NPI) is 1538231337, issued on 11/15/2006.
Does DARCY BAIRD, MD prescribe more brand-name or generic drugs?
DARCY BAIRD, MD's prescribing is 19% brand-name and 81% generic drugs by claim count, with $36K in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US?
There are 44,313 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does DARCY BAIRD, MD prescribe most often?
Based on 2023 Medicare Part D data, DARCY BAIRD, MD's most frequently prescribed drugs include Yuvafem, Estradiol, Estring. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DARCY BAIRD, MD accept Medicare?
DARCY BAIRD, MD appears in CMS Medicare data with 367 Part D claims and 153 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DARCY BAIRD, MD's credentials?
DARCY BAIRD, MD's NPI is 1538231337 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.
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