2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1649765405 DO
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BRIAN KHONG, DO

Endocrinology, Diabetes & Metabolism Physician in SANTA ROSA, 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
1K
Medicare Part D claims · 251 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
42%
generic claims · 58% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
84.9209/100
▲ 2 pts above national avg 83.1 · [object Object]
Industry payments
$14.52
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

BRIAN KHONG, DO reported a CMS MIPS final score of 84.9209/100 — above the 83.1 national average — and filed 1,100 Medicare Part D claims in 2023.

84.9209/100
MIPS score · +2 vs avg
1K
Part D claims, 2023
42%
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.

BRIAN KHONG, DO's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

85 45th percentile higher than 45% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

BRIAN KHONG, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 BRIAN KHONG, DO?

Near national average

NPI registry status

Active

Issued 06/25/2018

NPI 1649765405

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

1,100 58% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

MIPS final score

84.9209/100 1.8209000000000088% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in California

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among California providers

California providers

Endocrinology, Diabetes & Metabolism Physician share within California

1. Endocrinology, Diabetes & Metabolism Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endocrinology, Diabetes & Metabolism Physician share within California

Medicare quality performance — MIPS

BRIAN KHONG, DO's 2023 MIPS final score plotted against the Endocrinology, Diabetes & Metabolism Physician national average

Near national average
MIPS Final Score
84.9209/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Endocrinology, Diabetes & Metabolism Physician) — 84.9209/100 vs national avg 83.1

0%100%National avg83%84.9%
MIPS final score (Endocrinology, Diabetes & Metabolism Physician) — 84.9209/100 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).

BRIAN KHONG, DO appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding DO credentials at 3883 AIRWAY DR, SANTA ROSA, CA, 95403, with a listed phone of (707) 521-7735. NPI 1649765405 was issued on 06/25/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KHONG 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 1,100 prescription claims written by this provider, covering 251 Medicare beneficiaries and totaling roughly $836K in drug spend, split 58% brand-name and 42% 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 84.9209/100 for the 2023 performance year (Quality 66.9864), compared with the national average of 83.1.

Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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

3883 AIRWAY DR
SANTA ROSA, CA 95403

Provider Details

NPI 1649765405
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials DO
Gender Male
NPI Issued 06/25/2018

CMS Quality Score (MIPS)

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

84.9209
Final Score
Avg: 83.1
66.9864
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where BRIAN KHONG, DO 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.

SUTTER BAY MEDICAL FOUNDATION
SANTA ROSA, 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 BRIAN KHONG, DO. Source: openpaymentsdata.cms.gov.

Total received

$15

Largest payer

Radius Health, Inc.

Most common payment type

Education

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 BRIAN KHONG, DO. To verify BRIAN KHONG, DO'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 · Brand-heavy

BRIAN KHONG, DO — brand share 58.0%
Specialty average (est.)

58% brand-name claims vs 42% generic, on 1,100 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.

1,100
Total Claims
$836K
Total Drug Cost
251
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,491
Total Day Supply
74,082
Brand vs Generic
58% brand / 42% generic
Brand Drug Cost
$812K
Generic Drug Cost
$10K

Patient Demographics

Average Patient Age
68.6 years
Avg HCC Risk Score
1.65
Gender Split
62% female / 38% male
Age Distribution
<65: 54, 65-74: 129, 75-84: 57, 85+: 11

Top Prescribed Drugs (Medicare Part D)

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

What BRIAN KHONG, DO prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Levothyroxine Sodium
97
Trulicity
Dulaglutide
86
Ozempic
Semaglutide
80
Jardiance
Empagliflozin
57
Atorvastatin Calcium
53
Metformin Hcl Er
Metformin Hcl
42
Novolog Flexpen
Insulin Aspart
33
Methimazole
31
Humalog Kwikpen U-100
Insulin Lispro
28
Victoza 3-Pak
Liraglutide
25

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

Endocrinology, Diabetes & Metabolism Physician Overview

How BRIAN KHONG, DO fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.

7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider

BRIAN KHONG, DO's 1,100 claims are below the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in California

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

Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is BRIAN KHONG, DO's specialty?
BRIAN KHONG, DO specializes in Endocrinology, Diabetes & Metabolism Physician and practices in SANTA ROSA, California. Credentials: DO.
How much does BRIAN KHONG, DO prescribe under Medicare Part D?
In 2023, BRIAN KHONG, DO wrote 1,100 Medicare Part D claims totaling $836K in drug costs for 251 beneficiaries.
What is BRIAN KHONG, DO's Medicare quality score?
BRIAN KHONG, DO has a CMS MIPS Final Score of 84.9209/100 (Quality: 66.9864). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is BRIAN KHONG, DO located?
BRIAN KHONG, DO is located at 3883 AIRWAY DR, SANTA ROSA, CA, 95403. Phone: (707) 521-7735.
What is BRIAN KHONG, DO's NPI number?
BRIAN KHONG, DO's National Provider Identifier (NPI) is 1649765405, issued on 06/25/2018.
Does BRIAN KHONG, DO prescribe more brand-name or generic drugs?
BRIAN KHONG, DO's prescribing is 58% brand-name and 42% generic drugs by claim count, with $812K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US?
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does BRIAN KHONG, DO prescribe most often?
Based on 2023 Medicare Part D data, BRIAN KHONG, DO's most frequently prescribed drugs include Levothyroxine Sodium, Trulicity, Ozempic. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does BRIAN KHONG, DO accept Medicare?
BRIAN KHONG, DO appears in CMS Medicare data with 1,100 Part D claims and 251 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify BRIAN KHONG, DO's credentials?
BRIAN KHONG, DO's NPI is 1649765405 with credentials DO. 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