2026 NPPES data Ph.D. Medical Genetics NPI 1699781203 M.D.
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KEN CHOW, M.D.

Ph.D. Medical Genetics in YUBA CITY, 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
2K
Medicare Part D claims · 665 beneficiaries · Ph.D. Medical Genetics avg: 984
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
98.3/100
▲ 15 pts above national avg 83.1 · [object Object]
Industry payments
$4.1K
179 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: KEN CHOW, M.D. is a Ph.D. Medical Genetics ([object Object]) practicing in YUBA CITY, California with a Medicare Part D prescribing footprint of 2K claims across 665 beneficiaries — 13% brand-name prescribing . Their CMS MIPS Final Score of 98.3/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $4.1K across 179 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: KEN CHOW, M.D. reported a CMS MIPS final score of 98.3 out of 100, above the 83.1 national average, and filed 1,575 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

KEN CHOW, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 08/01/2006

NPI 1699781203

Primary specialty

Ph.D. Medical Genetics

Rare

357 US NPIs in this specialty

Medicare Part D claims

1,575 60% vs specialty avg

2023 prescription claims

Specialty avg: 984

MIPS final score

98.3/100 15.200000000000003% pts

Exceptional band

vs 83.1 national avg

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

Medicare quality performance — MIPS

KEN CHOW, M.D.'s 2023 MIPS final score plotted against the Ph.D. Medical Genetics national average

High performer (top quartile)
MIPS Final Score
98.3/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Ph.D. Medical Genetics) — 98.3/100 vs national avg 83.1

0%100%National avg83%98.3%
MIPS final score (Ph.D. Medical Genetics) — 98.3/100 vs national avg 83.1

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).

KEN CHOW, M.D. is a Ph.D. Medical Genetics provider practicing in YUBA CITY, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1699781203. 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.

KEN CHOW, M.D. appears in the CMS NPPES registry as a Ph.D. Medical Genetics provider holding M.D. credentials at 870 SHASTA ST, YUBA CITY, CA, 95991, with a listed phone of (530) 671-3671. NPI 1699781203 was issued on 08/01/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHOW 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 1,575 prescription claims written by this provider, covering 665 Medicare beneficiaries and totaling roughly $498K in drug spend, split 13% brand-name and 87% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 98.3/100 for the 2023 performance year (Quality 90), compared with the national average of 83.1.

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

870 SHASTA ST
YUBA CITY, CA 95991

Provider Details

NPI 1699781203
Specialty Ph.D. Medical Genetics
Credentials M.D.
Gender Male
NPI Issued 08/01/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

98.3
Final Score
Avg: 83.1
90
Quality
96
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where KEN CHOW, M.D. 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.

NORTH VALLEY GASTROENTEROLOGY MEDICAL GROUP INC
YUBA CITY, 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 KEN CHOW, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$4.1K

Largest payer

ABBVIE INC.

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 KEN CHOW, M.D.. To verify KEN CHOW, M.D.'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

KEN CHOW, M.D. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 1,575 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.

1,575
Total Claims
$498K
Total Drug Cost
665
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,489
Total Day Supply
93,435
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$417K
Generic Drug Cost
$81K
Antibiotic Claims
31

Patient Demographics

Average Patient Age
73.5 years
Avg HCC Risk Score
1.08
Gender Split
58% female / 42% male
Age Distribution
<65: 62, 65-74: 307, 75-84: 234, 85+: 62

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Omeprazole
550
Pantoprazole Sodium
213
Linzess
Linaclotide
44
Cholestyramine Light
Cholestyramine/Aspartame
42
Esomeprazole Magnesium
39
Mesalamine
32
Dexlansoprazole Dr
Dexlansoprazole
21
Lansoprazole
19
Humira(Cf) Pen
Adalimumab
16
Creon
Lipase/Protease/Amylase
15

* 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 KEN CHOW, M.D. 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

KEN CHOW, M.D.'s 1,575 claims are above 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 CHOW.

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

Frequently Asked Questions

What is KEN CHOW, M.D.'s specialty?
KEN CHOW, M.D. specializes in Ph.D. Medical Genetics and practices in YUBA CITY, California. Credentials: M.D..
How much does KEN CHOW, M.D. prescribe under Medicare Part D?
In 2023, KEN CHOW, M.D. wrote 1,575 Medicare Part D claims totaling $498K in drug costs for 665 beneficiaries.
What is KEN CHOW, M.D.'s Medicare quality score?
KEN CHOW, M.D. has a CMS MIPS Final Score of 98.3/100 (Quality: 90). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is KEN CHOW, M.D. located?
KEN CHOW, M.D. is located at 870 SHASTA ST, YUBA CITY, CA, 95991. Phone: (530) 671-3671.
What is KEN CHOW, M.D.'s NPI number?
KEN CHOW, M.D.'s National Provider Identifier (NPI) is 1699781203, issued on 08/01/2006.
Does KEN CHOW, M.D. prescribe more brand-name or generic drugs?
KEN CHOW, M.D.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $417K in brand drug costs.
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 KEN CHOW, M.D. prescribe most often?
Based on 2023 Medicare Part D data, KEN CHOW, M.D.'s most frequently prescribed drugs include Omeprazole, Pantoprazole Sodium, Linzess. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KEN CHOW, M.D. accept Medicare?
KEN CHOW, M.D. appears in CMS Medicare data with 1,575 Part D claims and 665 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KEN CHOW, M.D.'s credentials?
KEN CHOW, M.D.'s NPI is 1699781203 with credentials M.D.. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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