2026 NPPES data Ph.D. Medical Genetics NPI 1225013790 MD,DMD,FACS
Verify on CMS →

GRANGER WONG, MD,DMD,FACS

Ph.D. Medical Genetics in SACRAMENTO, 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
67
Medicare Part D claims · 25 beneficiaries · Ph.D. Medical Genetics avg: 984
Industry payments
$841.27
16 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: GRANGER WONG, MD,DMD,FACS is a Ph.D. Medical Genetics ([object Object]) practicing in SACRAMENTO, California with a Medicare Part D prescribing footprint of 67 claims across 25 beneficiaries . Industry payments of $841.27 across 16 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: GRANGER WONG, MD,DMD,FACS filed 67 Medicare Part D claims in 2023 across SACRAMENTO, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

GRANGER WONG, MD,DMD,FACS at a glance

Quality data not reported

NPI registry status

Active

Issued 12/07/2005

NPI 1225013790

Primary specialty

Ph.D. Medical Genetics

Rare

357 US NPIs in this specialty

Medicare Part D claims

67 93% vs specialty avg

2023 prescription claims

Specialty avg: 984

Specialty distribution in California

How Ph.D. Medical Genetics compares to other specialties among California providers

California providers

Ph.D. Medical Genetics share within California

1. Ph.D. Medical Genetics42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Ph.D. Medical Genetics share within California

Specialty board-certification context

Estimated specialty board-certified rate — Ph.D. Medical Genetics (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Ph.D. Medical Genetics ABMS/AOA estimate

Est. board-certified rate (Ph.D. Medical Genetics) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Ph.D. Medical Genetics) — 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).

GRANGER WONG, MD,DMD,FACS is a Ph.D. Medical Genetics provider practicing in SACRAMENTO, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD,DMD,FACS. NPI: 1225013790. 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.

GRANGER WONG, MD,DMD,FACS appears in the CMS NPPES registry as a Ph.D. Medical Genetics provider holding MD,DMD,FACS credentials at 2221 STOCKTON BLVD, SACRAMENTO, CA, 95817, with a listed phone of (916) 734-2130. NPI 1225013790 was issued on 12/07/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WONG 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 67 prescription claims written by this provider, covering 25 Medicare beneficiaries and totaling roughly $640 in drug spend, with an opioid prescribing rate of 17.9%. 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.

Ph.D. Medical Genetics is a narrow specialty nationwide, with 357 enrolled providers across 46 states and an average of 984 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

2221 STOCKTON BLVD
SACRAMENTO, CA 95817

Provider Details

NPI 1225013790
Specialty Ph.D. Medical Genetics
Credentials MD,DMD,FACS
Gender Male
NPI Issued 12/07/2005

Hospital and facility affiliations

Facilities where GRANGER WONG, MD,DMD,FACS 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.

REGENTS OF THE UNIV OF CA
FRENCH CAMP, 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).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for GRANGER WONG, MD,DMD,FACS. Source: openpaymentsdata.cms.gov.

Total received

$841

Largest payer

Mentor Worldwide LLC

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

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 GRANGER WONG, MD,DMD,FACS. To verify GRANGER WONG, MD,DMD,FACS'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.

67
Total Claims
$640
Total Drug Cost
25
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
71
Total Day Supply
617
Brand Drug Cost
$0
Generic Drug Cost
$640
Opioid Claims
12 (17.9% rate)
Antibiotic Claims
25

Patient Demographics

Average Patient Age
73.4 years
Avg HCC Risk Score
0.68

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Doxycycline Monohydrate
17
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
12

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

Ph.D. Medical Genetics Overview

How GRANGER WONG, MD,DMD,FACS fits within the Ph.D. Medical Genetics landscape nationally.

357
Ph.D. Medical Genetics Providers in US
46
States with Ph.D. Medical Genetics
984
Avg Claims per Provider

GRANGER WONG, MD,DMD,FACS's 67 claims are below the specialty average of 984.

Nearby Ph.D. Medical Genetics Providers in California

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

Compare Ph.D. Medical Genetics nationally: see state-by-state distribution →

Frequently Asked Questions

What is GRANGER WONG, MD,DMD,FACS's specialty?
GRANGER WONG, MD,DMD,FACS specializes in Ph.D. Medical Genetics and practices in SACRAMENTO, California. Credentials: MD,DMD,FACS.
How much does GRANGER WONG, MD,DMD,FACS prescribe under Medicare Part D?
In 2023, GRANGER WONG, MD,DMD,FACS wrote 67 Medicare Part D claims totaling $640 in drug costs for 25 beneficiaries.
Where is GRANGER WONG, MD,DMD,FACS located?
GRANGER WONG, MD,DMD,FACS is located at 2221 STOCKTON BLVD, SACRAMENTO, CA, 95817. Phone: (916) 734-2130.
What is GRANGER WONG, MD,DMD,FACS's NPI number?
GRANGER WONG, MD,DMD,FACS's National Provider Identifier (NPI) is 1225013790, issued on 12/07/2005.
Does GRANGER WONG, MD,DMD,FACS prescribe opioids?
Yes, GRANGER WONG, MD,DMD,FACS had 12 opioid claims in 2023 with an opioid prescribing rate of 17.9%.
How many Ph.D. Medical Genetics providers are there in the US?
There are 357 Ph.D. Medical Genetics providers across 46 states in the US. The average Ph.D. Medical Genetics provider writes 984 Medicare Part D claims per year.
What drugs does GRANGER WONG, MD,DMD,FACS prescribe most often?
Based on 2023 Medicare Part D data, GRANGER WONG, MD,DMD,FACS's most frequently prescribed drugs include Doxycycline Monohydrate, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GRANGER WONG, MD,DMD,FACS accept Medicare?
GRANGER WONG, MD,DMD,FACS appears in CMS Medicare data with 67 Part D claims and 25 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GRANGER WONG, MD,DMD,FACS's credentials?
GRANGER WONG, MD,DMD,FACS's NPI is 1225013790 with credentials MD,DMD,FACS. 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