2026 NPPES data Gynecologic Oncology Physician NPI 1962673046 MD
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DANIEL PAIK, MD

Gynecologic Oncology Physician in WALNUT CREEK, 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
130
Medicare Part D claims · 68 beneficiaries · Gynecologic Oncology Physician avg: 188
What the federal data reveals: DANIEL PAIK, MD is a Gynecologic Oncology Physician ([object Object]) practicing in WALNUT CREEK, California with a Medicare Part D prescribing footprint of 130 claims across 68 beneficiaries .

What stands out: DANIEL PAIK, MD filed 130 Medicare Part D claims in 2023 across WALNUT CREEK, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

DANIEL PAIK, 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).

DANIEL PAIK, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 03/18/2008

NPI 1962673046

Primary specialty

Gynecologic Oncology Physician

Niche

1,360 US NPIs in this specialty

Medicare Part D claims

130 31% vs specialty avg

2023 prescription claims

Specialty avg: 188

Specialty distribution in California

How Gynecologic Oncology Physician compares to other specialties among California providers

California providers

Gynecologic Oncology Physician share within California

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

Specialty board-certification context

Estimated specialty board-certified rate — Gynecologic Oncology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Gynecologic Oncology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Gynecologic Oncology 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).

DANIEL PAIK, MD is a Gynecologic Oncology Physician provider practicing in WALNUT CREEK, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1962673046. 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.

DANIEL PAIK, MD appears in the CMS NPPES registry as a Gynecologic Oncology Physician provider holding MD credentials at 1455 MONTEGO, WALNUT CREEK, CA, 94598, with a listed phone of (925) 627-3440. NPI 1962673046 was issued on 03/18/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PAIK 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 130 prescription claims written by this provider, covering 68 Medicare beneficiaries and totaling roughly $6K in drug spend, with an opioid prescribing rate of 45.4%. 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.

Gynecologic Oncology Physician is a narrow specialty nationwide, with 1,360 enrolled providers across 49 states and an average of 188 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

1455 MONTEGO
WALNUT CREEK, CA 94598

Provider Details

NPI 1962673046
Specialty Gynecologic Oncology Physician
Credentials MD
Gender Male
NPI Issued 03/18/2008

Hospital and facility affiliations

Facilities where DANIEL PAIK, 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
WALNUT CREEK, 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 DANIEL PAIK, MD. To verify DANIEL PAIK, 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.

Medicare Part D Prescribing Data

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

130
Total Claims
$6K
Total Drug Cost
68
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
190
Total Day Supply
3,790
Generic Drug Cost
$2K
Opioid Claims
59 (45.4% rate)

Patient Demographics

Average Patient Age
74.5 years
Avg HCC Risk Score
1.29

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
44
Lorazepam
14
Tramadol Hcl
11

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

Gynecologic Oncology Physician Overview

How DANIEL PAIK, MD fits within the Gynecologic Oncology Physician landscape nationally.

1,360
Gynecologic Oncology Physician Providers in US
49
States with Gynecologic Oncology Physician
188
Avg Claims per Provider

DANIEL PAIK, MD's 130 claims are below the specialty average of 188.

Nearby Gynecologic Oncology Physician Providers in California

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

Compare Gynecologic Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is DANIEL PAIK, MD's specialty?
DANIEL PAIK, MD specializes in Gynecologic Oncology Physician and practices in WALNUT CREEK, California. Credentials: MD.
How much does DANIEL PAIK, MD prescribe under Medicare Part D?
In 2023, DANIEL PAIK, MD wrote 130 Medicare Part D claims totaling $6K in drug costs for 68 beneficiaries.
Where is DANIEL PAIK, MD located?
DANIEL PAIK, MD is located at 1455 MONTEGO, WALNUT CREEK, CA, 94598. Phone: (925) 627-3440.
What is DANIEL PAIK, MD's NPI number?
DANIEL PAIK, MD's National Provider Identifier (NPI) is 1962673046, issued on 03/18/2008.
Does DANIEL PAIK, MD prescribe opioids?
Yes, DANIEL PAIK, MD had 59 opioid claims in 2023 with an opioid prescribing rate of 45.4%.
How many Gynecologic Oncology Physician providers are there in the US?
There are 1,360 Gynecologic Oncology Physician providers across 49 states in the US. The average Gynecologic Oncology Physician provider writes 188 Medicare Part D claims per year.
What drugs does DANIEL PAIK, MD prescribe most often?
Based on 2023 Medicare Part D data, DANIEL PAIK, MD's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Lorazepam, Tramadol Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DANIEL PAIK, MD accept Medicare?
DANIEL PAIK, MD appears in CMS Medicare data with 130 Part D claims and 68 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DANIEL PAIK, MD's credentials?
DANIEL PAIK, MD's NPI is 1962673046 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