NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1235371857 MD, PHD
Verify on CMS → Thomas Knecht, MD, PHD
Endocrinology, Diabetes & Metabolism Physician in Petaluma, 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 7,871 in Endocrinology, Diabetes & Metabolism 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
515
Medicare Part D claims · 63 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
MIPS score
73.8/100
▼ 10 pts below national avg 83.5 · Mid-tier
What the federal data shows
Thomas Knecht, MD, PHD reported a CMS MIPS final score of 73.8/100 - below the 83.5 national average - and filed 515 Medicare Part D claims in 2023.
- 73.8/100
- MIPS score · -10 vs avg
- 515
- Part D claims, 2023
- Likely
- board-certified (heuristic)
- ≥11th
- pct among measured MIPS (lower-bound band)
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.
Thomas Knecht, MD, PHD'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.
74 ≥ 11th percentile 11% of 454,083 measured providers are in lower value bands
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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Thomas Knecht, MD, PHD sits
This provider among endocrinology, diabetes & metabolism physician peers
Across the 2,341 endocrinology, diabetes & metabolism physician providers who report both Medicare Part D prescribing and a MIPS quality score, Thomas Knecht, MD, PHD writes more Part D claims than 17% of them and scores higher on MIPS quality than 14% - 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 endocrinology, diabetes & metabolism physician peer from a representative sample of 60; the gold marker is Thomas Knecht, MD, PHD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Thomas Knecht, MD, PHD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Thomas Knecht, MD, PHD?
Below national averagePrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
515 80% vs specialty avg
MIPS final score
73.8/100 9.7 pts vs avg
Specialty distribution in California
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Thomas Knecht, MD, PHD's 2023 MIPS final score plotted against the Endocrinology, Diabetes & Metabolism Physician national average
- MIPS Final Score
- 73.8/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Endocrinology, Diabetes & Metabolism Physician) - 73.8/100 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).
Thomas Knecht, MD, PHD appears in the CMS NPPES registry as an Endocrinology, Diabetes & Metabolism Physician provider holding MD, PHD credentials at 141 LYNCH CREEK WAY, Petaluma, CA, 94954, with a listed phone of (707) 762-0001. NPI 1235371857 was issued on 03/27/2009.
Medicare Part D records for calendar year 2023 show 515 prescription claims written by this provider, covering 63 Medicare beneficiaries and totaling roughly $373K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.8/100 for the 2023 performance year (Quality 76.9, Cost 36.9), compared with the 83.5 average among clinicians with a measured score.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,871 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
Provider Details
| NPI | 1235371857 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | MD, PHD |
| Gender | Male |
| NPI Issued | 03/27/2009 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.7919
Final Score
Measured-score avg: 83.5
76.8775
Quality
36.9374
Cost
92
Promoting Interoperability
Reporting: Group practice
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 Thomas Knecht, MD, PHD. To verify Thomas Knecht, MD, PHD'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.
515
Total Claims
$373K
Total Drug Cost
63
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,066
- Total Day Supply
- 31,547
- Generic Drug Cost
- $9K
Patient Demographics
- Average Patient Age
- 64.7 years
- Avg HCC Risk Score
- 1.63
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 23, 65-74: 37, 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 Thomas Knecht, MD, PHD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ozempic
Ozempic
89 claims
- Jardiance
Jardiance
48 claims
- Atorvastatin Calcium
Atorvastatin Calcium
41 claims
- Pioglitazone Hcl 34
Pioglitazone Hcl
34 claims
- Lisinopril 22
Lisinopril
22 claims
- Spironolactone 22
Spironolactone
22 claims
- Levothyroxine Sodium 14
Levothyroxine Sodium
14 claims
- Metformin Hcl Er 13
Metformin Hcl Er
13 claims
| Drug | Claims |
|---|---|
| Ozempic Semaglutide | 89 |
| Jardiance Empagliflozin | 48 |
| Atorvastatin Calcium | 41 |
| Pioglitazone Hcl | 34 |
| Lisinopril | 22 |
| Spironolactone | 22 |
| Levothyroxine Sodium | 14 |
| Metformin Hcl Er Metformin Hcl | 13 |
| Tresiba Flextouch U-200 Insulin Degludec | 13 |
| Tymlos Abaloparatide | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in CA →
All providers in California →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Thomas Knecht, MD, PHD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,871
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Thomas Knecht, MD, PHD's 515 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 Knecht.
Dr. Anita Abraham
M.D.
Stockton, CA
Dr. Sallie Adams
M.D.
Roseville, CA
Ananta Addala
Palo Alto, CA
Dr. Helen Adelberg
M.D.
Encino, CA
Dr. David Aftergood
MD
Beverly Hills, CA
Compare Endocrinology, Diabetes & Metabolism 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 Endocrinology, Diabetes & Metabolism 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.
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Frequently Asked Questions
What is Thomas Knecht, MD, PHD's specialty? ▼
Thomas Knecht, MD, PHD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Petaluma, California. Credentials: MD, PHD.
How much does Thomas Knecht, MD, PHD prescribe under Medicare Part D? ▼
In 2023, Thomas Knecht, MD, PHD wrote 515 Medicare Part D claims totaling $373K in drug costs for 63 beneficiaries.
What is Thomas Knecht, MD, PHD's Medicare quality score? ▼
Thomas Knecht, MD, PHD has a CMS MIPS Final Score of 73.8/100 (Quality: 76.9, Cost: 36.9). 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 Thomas Knecht, MD, PHD located? ▼
Thomas Knecht, MD, PHD is located at 141 LYNCH CREEK WAY, Petaluma, CA, 94954. Phone: (707) 762-0001.
What is Thomas Knecht, MD, PHD's NPI number? ▼
Thomas Knecht, MD, PHD's National Provider Identifier (NPI) is 1235371857, issued on 03/27/2009.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,871 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 Thomas Knecht, MD, PHD prescribe most often? ▼
Based on 2023 Medicare Part D data, Thomas Knecht, MD, PHD's most frequently prescribed drugs include Ozempic, Jardiance, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Thomas Knecht, MD, PHD accept Medicare? ▼
Thomas Knecht, MD, PHD appears in CMS Medicare data with 515 Part D claims and 63 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Knecht, MD, PHD's credentials? ▼
Thomas Knecht, MD, PHD's NPI is 1235371857 with credentials MD, PHD. 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.