NPI registry status
Active
2026 NPPES data Specialist NPI 1912062829 M.D.
Verify on CMS → Norman Kahan, M.D.
Specialist in Los Gatos, 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 69,608 in Specialist, 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
397
Medicare Part D claims · 140 beneficiaries · Specialist avg: 1K
MIPS score
0/100
▼ 84 pts below national avg 83.5 · Penalty band
What the federal data shows
Norman Kahan, M.D. reported a CMS MIPS final score of 0/100 - below the 83.5 national average - and filed 397 Medicare Part D claims in 2023.
- 0/100
- MIPS score · -83 vs avg
- 397
- Part D claims, 2023
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.
Norman Kahan, M.D.'s MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
0 0th percentile higher than 0% of 454,083 measured providers
Each bar is a band; taller bars hold more measured 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
Where Norman Kahan, M.D. sits
This provider among specialist peers
Across the 4,261 specialist providers who report both Medicare Part D prescribing and a MIPS quality score, Norman Kahan, M.D. writes more Part D claims than 35% of them and scores higher on MIPS quality than 0% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one specialist peer from a representative sample of 60; the gold marker is Norman Kahan, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Norman Kahan, M.D.?
Below national averagePrimary specialty
Specialist
Medicare Part D claims
397 73% vs specialty avg
MIPS final score
0/100 83.5 pts vs avg
Specialty distribution in California
How Specialist compares to other specialties among California providers
Medicare quality performance, MIPS
Norman Kahan, M.D.'s 2023 MIPS final score plotted against the Specialist national average
- MIPS Final Score
- 0/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Specialist) - 0/100 vs national avg 83.5
How MIPS and board certification work
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).
Norman Kahan, M.D. appears in the CMS NPPES registry as a Specialist provider holding M.D. credentials at 555 KNOWLES DR, Los Gatos, CA, 95032, with a listed phone of (408) 374-1112. NPI 1912062829 was issued on 12/22/2006.
Medicare Part D records for calendar year 2023 show 397 prescription claims written by this provider, covering 140 Medicare beneficiaries and totaling roughly $10K in drug spend, with an opioid prescribing rate of 10.3%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 0/100 for the 2023 performance year (Quality 0), compared with the 83.5 average among clinicians with a measured score.
Specialist is a high-volume specialty nationwide, with 69,608 enrolled providers across 55 states and an average of 1,474 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
Provider Details
| NPI | 1912062829 |
|---|---|
| Specialty | Specialist |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 12/22/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
0
Final Score
Measured-score avg: 83.5
0
Quality
Reporting: Individual
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 Norman Kahan, M.D.. To verify Norman Kahan, 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.
397
Total Claims
$10K
Total Drug Cost
140
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 450
- Total Day Supply
- 10,979
- Generic Drug Cost
- $10K
- Opioid Claims
- 41 (10.3% rate)
Patient Demographics
- Average Patient Age
- 76.7 years
- Avg HCC Risk Score
- 1.06
- Gender Split
- 54% female / 46% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Norman Kahan, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
147 claims
- Prednisone
Prednisone
73 claims
- Etodolac 39
Etodolac
39 claims
- Acetaminophen-Code… 31
Acetaminophen-Codeine
31 claims
- Celecoxib 31
Celecoxib
31 claims
- Diclofenac Sodium 20
Diclofenac Sodium
20 claims
- Methylprednisolone 16
Methylprednisolone
16 claims
| Drug | Claims |
|---|---|
| Gabapentin | 147 |
| Prednisone | 73 |
| Etodolac | 39 |
| Acetaminophen-Codeine Acetaminophen With Codeine | 31 |
| Celecoxib | 31 |
| Diclofenac Sodium | 20 |
| Methylprednisolone | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Norman Kahan, M.D. fits within the Specialist landscape nationally.
69,608
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Norman Kahan, M.D.'s 397 claims are below the specialty average of 1,474.
Nearby Specialist Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Kahan.
Adrienne Abad Santos
San Francisco, CA
Dr. Brenda Abarca
MD
Torrance, CA
Dr. Fatemeh Abbasi
PT
Van Nuys, CA
Dr. Erlinda Abcede
M.D.
Cudahy, CA
Dr. Maher Abdallah
M.D.
Palm Springs, CA
Compare Specialist 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 Specialist 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.
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Frequently Asked Questions
What is Norman Kahan, M.D.'s specialty? ▼
Norman Kahan, M.D. specializes in Specialist and practices in Los Gatos, California. Credentials: M.D..
How much does Norman Kahan, M.D. prescribe under Medicare Part D? ▼
In 2023, Norman Kahan, M.D. wrote 397 Medicare Part D claims totaling $10K in drug costs for 140 beneficiaries.
What is Norman Kahan, M.D.'s Medicare quality score? ▼
Norman Kahan, M.D. has a CMS MIPS Final Score of 0/100 (Quality: 0). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Norman Kahan, M.D. located? ▼
Norman Kahan, M.D. is located at 555 KNOWLES DR, Los Gatos, CA, 95032. Phone: (408) 374-1112.
What is Norman Kahan, M.D.'s NPI number? ▼
Norman Kahan, M.D.'s National Provider Identifier (NPI) is 1912062829, issued on 12/22/2006.
Does Norman Kahan, M.D. prescribe opioids? ▼
Yes, Norman Kahan, M.D. had 41 opioid claims in 2023 with an opioid prescribing rate of 10.3%.
How many Specialist providers are there in the US? ▼
There are 69,608 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Norman Kahan, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Norman Kahan, M.D.'s most frequently prescribed drugs include Gabapentin, Prednisone, Etodolac. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Norman Kahan, M.D. accept Medicare? ▼
Norman Kahan, M.D. appears in CMS Medicare data with 397 Part D claims and 140 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Norman Kahan, M.D.'s credentials? ▼
Norman Kahan, M.D.'s NPI is 1912062829 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
View source datasets and methodology notes
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.