2026 NPPES data Gastroenterology Physician NPI 1639189459 M.D.
Verify on CMS →

KATHRYN SWANSON, M.D.

Gastroenterology Physician in MONTEREY, 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
630
Medicare Part D claims · 257 beneficiaries · Gastroenterology Physician avg: 833
MIPS score
83.7812/100
▲ 1 pts above national avg 83.1 · [object Object]
Industry payments
$291.76
7 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

KATHRYN SWANSON, M.D. reported a CMS MIPS final score of 83.7812/100 — above the 83.1 national average — and filed 630 Medicare Part D claims in 2023.

83.7812/100
MIPS score · +1 vs avg
630
Part D claims, 2023
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.

KATHRYN SWANSON, M.D.'s MIPS score vs every scored U.S. clinician

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

84 42nd percentile higher than 42% 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)

KATHRYN SWANSON, M.D. 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 KATHRYN SWANSON, M.D.?

Near national average

NPI registry status

Active

Issued 08/08/2006

NPI 1639189459

Primary specialty

Gastroenterology Physician

Mid-sized

16,567 US NPIs in this specialty

Medicare Part D claims

630 24% vs specialty avg

2023 prescription claims

Specialty avg: 833

MIPS final score

83.7812/100 0.681200000000004% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in California

How Gastroenterology Physician compares to other specialties among California providers

California providers

Gastroenterology Physician share within California

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

Medicare quality performance — MIPS

KATHRYN SWANSON, M.D.'s 2023 MIPS final score plotted against the Gastroenterology Physician national average

Near national average
MIPS Final Score
83.7812/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Gastroenterology Physician) — 83.7812/100 vs national avg 83.1

0%100%National avg83%83.8%
MIPS final score (Gastroenterology Physician) — 83.7812/100 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).

KATHRYN SWANSON, M.D. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D. credentials at 23 UPPER RAGSDALE DR, MONTEREY, CA, 93940, with a listed phone of (831) 375-3577. NPI 1639189459 was issued on 08/08/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SWANSON 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 630 prescription claims written by this provider, covering 257 Medicare beneficiaries and totaling roughly $159K in drug spend. 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 83.7812/100 for the 2023 performance year (Quality 75.8697, Cost 70.6531), compared with the national average of 83.1.

Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 enrolled providers across 54 states and an average of 833 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

23 UPPER RAGSDALE DR
MONTEREY, CA 93940

Provider Details

NPI 1639189459
Specialty Gastroenterology Physician
Credentials M.D.
Gender Female
NPI Issued 08/08/2006

CMS Quality Score (MIPS)

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

83.7812
Final Score
Avg: 83.1
75.8697
Quality
70.6531
Cost
95
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where KATHRYN SWANSON, 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.

MONTEREY BAY GI CONSULTANTS MEDICAL GROUP INC
MONTEREY, 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 KATHRYN SWANSON, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$292

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 KATHRYN SWANSON, M.D.. To verify KATHRYN SWANSON, 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.

Medicare Part D Prescribing Data

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

630
Total Claims
$159K
Total Drug Cost
257
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,312
Total Day Supply
35,322
Generic Drug Cost
$48K
Antibiotic Claims
12

Patient Demographics

Average Patient Age
72.5 years
Avg HCC Risk Score
0.90
Gender Split
79% female / 21% male

Top Prescribed Drugs (Medicare Part D)

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

What KATHRYN SWANSON, M.D. 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
Pantoprazole Sodium
137
Omeprazole
88
Sutab
Sod Sulf/Pot Chloride/Mag Sulf
35
Peg 3350-Electrolyte
Sodium Chloride/Nahco3/Kcl/Peg
33
Balsalazide Disodium
26
Colestipol Hcl
24
Mercaptopurine
23
Mesalamine
21
Ursodiol
20
Sulfasalazine
17

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

Gastroenterology Physician Overview

How KATHRYN SWANSON, M.D. fits within the Gastroenterology Physician landscape nationally.

16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider

KATHRYN SWANSON, M.D.'s 630 claims are below the specialty average of 833.

Nearby Gastroenterology Physician Providers in California

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

Compare Gastroenterology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is KATHRYN SWANSON, M.D.'s specialty?
KATHRYN SWANSON, M.D. specializes in Gastroenterology Physician and practices in MONTEREY, California. Credentials: M.D..
How much does KATHRYN SWANSON, M.D. prescribe under Medicare Part D?
In 2023, KATHRYN SWANSON, M.D. wrote 630 Medicare Part D claims totaling $159K in drug costs for 257 beneficiaries.
What is KATHRYN SWANSON, M.D.'s Medicare quality score?
KATHRYN SWANSON, M.D. has a CMS MIPS Final Score of 83.7812/100 (Quality: 75.8697, Cost: 70.6531). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is KATHRYN SWANSON, M.D. located?
KATHRYN SWANSON, M.D. is located at 23 UPPER RAGSDALE DR, MONTEREY, CA, 93940. Phone: (831) 375-3577.
What is KATHRYN SWANSON, M.D.'s NPI number?
KATHRYN SWANSON, M.D.'s National Provider Identifier (NPI) is 1639189459, issued on 08/08/2006.
How many Gastroenterology Physician providers are there in the US?
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does KATHRYN SWANSON, M.D. prescribe most often?
Based on 2023 Medicare Part D data, KATHRYN SWANSON, M.D.'s most frequently prescribed drugs include Pantoprazole Sodium, Omeprazole, Sutab. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KATHRYN SWANSON, M.D. accept Medicare?
KATHRYN SWANSON, M.D. appears in CMS Medicare data with 630 Part D claims and 257 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KATHRYN SWANSON, M.D.'s credentials?
KATHRYN SWANSON, M.D.'s NPI is 1639189459 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