2026 NPPES data Family Medicine Physician NPI 1801906995 M.D., C.D.E.
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James Guetzkow, M.D., C.D.E.

Family 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 147,640 in Family 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
960
Medicare Part D claims · 221 beneficiaries · Family Medicine Physician avg: 3K
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

James Guetzkow, M.D., C.D.E. filed 960 Medicare Part D claims in 2023 as a Family Medicine Physician in San Jose, California.

960
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.

James Guetzkow, M.D., C.D.E.'s Medicare Part D volume vs every U.S. prescriber

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

960 Top 25% higher than 75% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 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 certification likely (heuristic, not verified)

James Guetzkow, M.D., C.D.E. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 James Guetzkow, M.D., C.D.E.?

Quality data not reported

NPI registry status

Active

Issued 08/30/2006

NPI 1801906995

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

960 72% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in California

How Family 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%Family Medicine Physician - 1.7%Family Medicine Physician1.7%
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 Family 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).

James Guetzkow, M.D., C.D.E. appears in the CMS NPPES registry as a Family Medicine Physician provider holding M.D., C.D.E. credentials at 1852 KOCHER DRIVE, San Jose, CA, 95125, with a listed phone of (408) 398-4831. NPI 1801906995 was issued on 08/30/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Guetzkow 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 960 prescription claims written by this provider, covering 221 Medicare beneficiaries and totaling roughly $100K in drug spend, with an opioid prescribing rate of 3.2%. 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.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

1852 KOCHER DRIVE
San Jose, CA 95125

Provider Details

NPI 1801906995
Specialty Family Medicine Physician
Credentials M.D., C.D.E.
Gender Male
NPI Issued 08/30/2006

Hospital and facility affiliations

Facilities where James Guetzkow, M.D., C.D.E. 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.

Quantum Bay Area Hospitalist Medical Group Inc
San Jose, 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).

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 James Guetzkow, M.D., C.D.E.. To verify James Guetzkow, M.D., C.D.E.'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.

960
Total Claims
$100K
Total Drug Cost
221
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,489
Total Day Supply
40,586
Generic Drug Cost
$20K
Opioid Claims
31 (3.2% rate)
Antibiotic Claims
51

Patient Demographics

Average Patient Age
76.9 years
Avg HCC Risk Score
2.06
Gender Split
55% female / 45% male
Age Distribution
<65: 19, 65-74: 70, 75-84: 77, 85+: 55

Top Prescribed Drugs (Medicare Part D)

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

What James Guetzkow, M.D., C.D.E. 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
64
Eliquis
Apixaban
62
Amlodipine Besylate
53
Atorvastatin Calcium
34
Metformin Hcl
34
Furosemide
33
Losartan Potassium
33
Clopidogrel
Clopidogrel Bisulfate
27
Levothyroxine Sodium
26
Ondansetron Odt
Ondansetron
24

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

Family Medicine Physician Overview

How James Guetzkow, M.D., C.D.E. fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

James Guetzkow, M.D., C.D.E.'s 960 claims are below the specialty average of 3,418.

Nearby Family Medicine Physician Providers in California

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

Compare Family 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 Family 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 James Guetzkow, M.D., C.D.E.'s specialty?
James Guetzkow, M.D., C.D.E. specializes in Family Medicine Physician and practices in San Jose, California. Credentials: M.D., C.D.E..
How much does James Guetzkow, M.D., C.D.E. prescribe under Medicare Part D?
In 2023, James Guetzkow, M.D., C.D.E. wrote 960 Medicare Part D claims totaling $100K in drug costs for 221 beneficiaries.
Where is James Guetzkow, M.D., C.D.E. located?
James Guetzkow, M.D., C.D.E. is located at 1852 KOCHER DRIVE, San Jose, CA, 95125. Phone: (408) 398-4831.
What is James Guetzkow, M.D., C.D.E.'s NPI number?
James Guetzkow, M.D., C.D.E.'s National Provider Identifier (NPI) is 1801906995, issued on 08/30/2006.
Does James Guetzkow, M.D., C.D.E. prescribe opioids?
Yes, James Guetzkow, M.D., C.D.E. had 31 opioid claims in 2023 with an opioid prescribing rate of 3.2%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does James Guetzkow, M.D., C.D.E. prescribe most often?
Based on 2023 Medicare Part D data, James Guetzkow, M.D., C.D.E.'s most frequently prescribed drugs include Pantoprazole Sodium, Eliquis, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does James Guetzkow, M.D., C.D.E. accept Medicare?
James Guetzkow, M.D., C.D.E. appears in CMS Medicare data with 960 Part D claims and 221 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify James Guetzkow, M.D., C.D.E.'s credentials?
James Guetzkow, M.D., C.D.E.'s NPI is 1801906995 with credentials M.D., C.D.E.. 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.