2026 NPPES data Addiction Medicine (Preventive Medicine) Physician NPI 1750649471 M.D., M.S.
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Kathryn Gunnison, M.D., M.S.

Addiction Medicine (Preventive Medicine) Physician in San Jose, California. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 321 in Addiction Medicine (Preventive Medicine) Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
151
Medicare Part D claims · 38 beneficiaries · Addiction Medicine (Preventive Medicine) Physician avg: 959
Generic prescribing
74%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Kathryn Gunnison, M.D., M.S. filed 151 Medicare Part D claims in 2023 as a Addiction Medicine (Preventive Medicine) Physician in San Jose, California, prescribing 74% generic.

151
Part D claims, 2023
74%
generic prescribing

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.

Kathryn Gunnison, M.D., M.S.'s Medicare Part D volume vs every U.S. prescriber

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

151 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 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. 2K+: 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-eligible specialty (heuristic, not verified)

Kathryn Gunnison, M.D., M.S. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Kathryn Gunnison, M.D., M.S.?

Quality data not reported

NPI registry status

Active

Issued 05/01/2012

NPI 1750649471

Primary specialty

Addiction Medicine (Preventive Medicine) Physician

Rare

321 US NPIs in this specialty

Medicare Part D claims

151 84% vs specialty avg

2023 prescription claims

Specialty avg: 959

Specialty distribution in California

How Addiction Medicine (Preventive Medicine) Physician compares to other specialties among California providers

California providers
Behavior Technician - 17.3%Behavior Technician17.3%Marriage & Family Therapist - 5.5%Marriage & Family Therapist5.5%Student in an Organized Health Care Education/Training Program - 5%Student in an Organized Health Care Education/Training Program5%Mental Health Counselor - 3.9%Mental Health Counselor3.9%Pharmacist - 3.5%Pharmacist3.5%Clinical Social Worker - 3.1%Clinical Social Worker3.1%Addiction Medicine (Preventive Medicine) Physician - 0%Addiction Medicine (Preventive Medicine) Physician0%
Largest specialties in California (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Addiction Medicine (Preventive Medicine) Physician. Verify directly:

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).

Kathryn Gunnison, M.D., M.S. appears in the CMS NPPES registry as a Addiction Medicine (Preventive Medicine) Physician provider holding M.D., M.S. credentials at 102 S 11TH ST, San Jose, CA, 95112, with a listed phone of (408) 495-9471. NPI 1750649471 was issued on 05/01/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Gunnison 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 151 prescription claims written by this provider, covering 38 Medicare beneficiaries and totaling roughly $44K in drug spend, split 26% brand-name and 74% 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.

Addiction Medicine (Preventive Medicine) Physician is a narrow specialty nationwide, with 321 enrolled providers across 44 states and an average of 959 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

102 S 11TH ST
San Jose, CA 95112

Provider Details

NPI 1750649471
Specialty Addiction Medicine (Preventive Medicine) Physician
Credentials M.D., M.S.
Gender Female
NPI Issued 05/01/2012

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 Kathryn Gunnison, M.D., M.S.. To verify Kathryn Gunnison, M.D., M.S.'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 · Above average

Kathryn Gunnison, M.D., M.S. - brand share 26.0%
Addiction Medicine (Preventive Medicine) Physician average

26% brand-name claims vs 74% generic, on 151 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.

151
Total Claims
$44K
Total Drug Cost
38
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
156
Total Day Supply
3,984
Brand vs Generic
26% brand / 74% generic
Brand Drug Cost
$31K
Generic Drug Cost
$12K

Patient Demographics

Average Patient Age
59.7 years
Avg HCC Risk Score
1.55
Gender Split
32% female / 68% male
Age Distribution
<65: 20, 65-74: 13, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What Kathryn Gunnison, M.D., M.S. 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
Suboxone
Buprenorphine Hcl/Naloxone Hcl
33
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
32
Buprenorphine Hcl
17
Naltrexone Hcl
15
Acamprosate Calcium
11

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

Addiction Medicine (Preventive Medicine) Physician Overview

How Kathryn Gunnison, M.D., M.S. fits within the Addiction Medicine (Preventive Medicine) Physician landscape nationally.

321
Addiction Medicine (Preventive Medicine) Physician Providers in US
44
States with Addiction Medicine (Preventive Medicine) Physician
959
Avg Claims per Provider

Kathryn Gunnison, M.D., M.S.'s 151 claims are below the specialty average of 959.

Nearby Addiction Medicine (Preventive Medicine) Physician Providers in California

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

Compare Addiction Medicine (Preventive Medicine) Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Addiction Medicine (Preventive Medicine) Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Kathryn Gunnison, M.D., M.S.'s specialty?
Kathryn Gunnison, M.D., M.S. specializes in Addiction Medicine (Preventive Medicine) Physician and practices in San Jose, California. Credentials: M.D., M.S..
How much does Kathryn Gunnison, M.D., M.S. prescribe under Medicare Part D?
In 2023, Kathryn Gunnison, M.D., M.S. wrote 151 Medicare Part D claims totaling $44K in drug costs for 38 beneficiaries.
Where is Kathryn Gunnison, M.D., M.S. located?
Kathryn Gunnison, M.D., M.S. is located at 102 S 11TH ST, San Jose, CA, 95112. Phone: (408) 495-9471.
What is Kathryn Gunnison, M.D., M.S.'s NPI number?
Kathryn Gunnison, M.D., M.S.'s National Provider Identifier (NPI) is 1750649471, issued on 05/01/2012.
Does Kathryn Gunnison, M.D., M.S. prescribe more brand-name or generic drugs?
Kathryn Gunnison, M.D., M.S.'s prescribing is 26% brand-name and 74% generic drugs by claim count, with $31K in brand drug costs.
How many Addiction Medicine (Preventive Medicine) Physician providers are there in the US?
There are 321 Addiction Medicine (Preventive Medicine) Physician providers across 44 states in the US. The average Addiction Medicine (Preventive Medicine) Physician provider writes 959 Medicare Part D claims per year.
What drugs does Kathryn Gunnison, M.D., M.S. prescribe most often?
Based on 2023 Medicare Part D data, Kathryn Gunnison, M.D., M.S.'s most frequently prescribed drugs include Suboxone, Buprenorphine-Naloxone, Buprenorphine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kathryn Gunnison, M.D., M.S. accept Medicare?
Kathryn Gunnison, M.D., M.S. appears in CMS Medicare data with 151 Part D claims and 38 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kathryn Gunnison, M.D., M.S.'s credentials?
Kathryn Gunnison, M.D., M.S.'s NPI is 1750649471 with credentials M.D., M.S.. 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

Compiled from official public sources by the PlainDoctor editorial team.