NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1154618700 M.D.
Verify on CMS → Marcos Lamas, M.D.
Endocrinology, Diabetes & Metabolism Physician in Danbury, Connecticut.
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
1K
Medicare Part D claims · 223 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
38%
generic claims · 55% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
78.2/100
▼ 5 pts below national avg 83.5 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Marcos Lamas, M.D. reported a CMS MIPS final score of 78.2/100 - below the 83.5 national average - and filed 1,139 Medicare Part D claims in 2023.
- 78.2/100
- MIPS score · -5 vs avg
- 1K
- Part D claims, 2023
- 38%
- generic prescribing
- 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.
CMS NPPES provider registry desk
NPI 1154618700 · Endocrinology, Diabetes & Metabolism Physician
NPI-10 · ENUM-MID · TAX-MID · MIPS-BELOW · RX-MID · BOOK-THIN · PHOTO-FINISH
- NPI-10 1154618700
- ENUM-MID 2011
- TAX-MID 8K Endocrinology, Diabetes
- MIPS-BELOW 78.2/100
- RX-MID 1,139
- BOOK-THIN 163 in Connecticut
- PHOTO-FINISH Diana Barb · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Lamas · this pro…
Lamas · this provider
78.2 MIPS pts
- Maria Grant · hi…
Maria Grant
78.2 MIPS pts
- Diana Barb · near
Diana Barb
78.2 MIPS pts
- Kenneth Cusi · n…
Kenneth Cusi
78.2 MIPS pts
- William Donahoo …
William Donahoo
78.2 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Marcos Lamas, 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.
78 ≥ 23rd percentile 23% 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 Marcos Lamas, M.D. 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, Marcos Lamas, M.D. writes more Part D claims than 30% of them and scores higher on MIPS quality than 24% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one endocrinology, diabetes & metabolism physician peer from a representative sample of 60; the gold marker is Marcos Lamas, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Marcos Lamas, 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 Marcos Lamas, M.D.?
Below national averagePrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
1,139 57% vs specialty avg
MIPS final score
78.2/100 5.3 pts vs avg
Specialty distribution in Connecticut
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Connecticut providers
Medicare quality performance, MIPS
Marcos Lamas, M.D.'s 2023 MIPS final score plotted against the Endocrinology, Diabetes & Metabolism Physician national average
- MIPS Final Score
- 78.2/100
- vs 83.5 national avg · 2023 performance year
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).
Practice Address
Provider Details
| NPI | 1154618700 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/05/2011 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
78.1881
Final Score
Measured-score avg: 83.5
72.5473
Quality
54.7463
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Marcos Lamas, 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.
Florida Clinical Practice Association Inc
Gainesville, FL
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Brand-heavy
Marcos Lamas, M.D. - brand share 55.0%
Endocrinology, Diabetes & Metabolism Physician average
55% brand-name claims vs 38% generic, on 1,139 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.
1,139
Total Claims
$794K
Total Drug Cost
223
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,575
- Total Day Supply
- 75,145
- Brand vs Generic
- 55% brand / 38% generic
- Brand Drug Cost
- $680K
- Generic Drug Cost
- $88K
Patient Demographics
- Average Patient Age
- 67.3 years
- Avg HCC Risk Score
- 1.87
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 62, 65-74: 105, 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 Marcos Lamas, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
170 claims
- Alendronate Sodium
Alendronate Sodium
94 claims
- Jardiance
Jardiance
68 claims
- Ozempic 66
Ozempic
66 claims
- Hydrocortisone 50
Hydrocortisone
50 claims
- Trulicity 44
Trulicity
44 claims
- Novolog Flexpen 37
Novolog Flexpen
37 claims
- Metformin Hcl 32
Metformin Hcl
32 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 170 |
| Alendronate Sodium | 94 |
| Jardiance Empagliflozin | 68 |
| Ozempic Semaglutide | 66 |
| Hydrocortisone | 50 |
| Trulicity Dulaglutide | 44 |
| Novolog Flexpen Insulin Aspart | 37 |
| Metformin Hcl | 32 |
| Tymlos Abaloparatide | 29 |
| Farxiga Dapagliflozin Propanediol | 26 |
* 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 CT →
All providers in Connecticut →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Marcos Lamas, M.D. 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
Marcos Lamas, M.D.'s 1,139 claims are below the specialty average of 2,639.
Nationwide Endocrinology, Diabetes & Metabolism Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Lamas, both outside Connecticut so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (78.2 here).
Same NPPES enumeration year (2011)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Lamas.
One of 163 Endocrinology, Diabetes & Metabolism Physician providers enrolled in Connecticut, 5 are shown here.
Dr. Fadi Al-Khayer
MD
Storrs, CT
Dr. Vivek Alaigh
MD
Stamford, CT
Dr. Kenda Alkwatli
MD
Wethersfield, CT
Dr. Ipek Alpertunga
MD
Hartford, CT
Dr. Helen Anaedo
M.D
Plainville, CT
Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Marcos Lamas, M.D.'s specialty? ▼
Marcos Lamas, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Danbury, Connecticut. Credentials: M.D..
How much does Marcos Lamas, M.D. prescribe under Medicare Part D? ▼
In 2023, Marcos Lamas, M.D. wrote 1,139 Medicare Part D claims totaling $794K in drug costs for 223 beneficiaries.
What is Marcos Lamas, M.D.'s Medicare quality score? ▼
Marcos Lamas, M.D. has a CMS MIPS Final Score of 78.2/100 (Quality: 72.5, Cost: 54.7). 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 Marcos Lamas, M.D. located? ▼
Marcos Lamas, M.D. is located at 25 GERMANTOWN RD, Danbury, CT, 06810. Phone: (203) 794-5620.
What is Marcos Lamas, M.D.'s NPI number? ▼
Marcos Lamas, M.D.'s National Provider Identifier (NPI) is 1154618700, issued on 07/05/2011.
Does Marcos Lamas, M.D. prescribe more brand-name or generic drugs? ▼
Marcos Lamas, M.D.'s prescribing is 55% brand-name and 38% generic drugs by claim count, with $680K in brand drug costs.
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 Marcos Lamas, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Marcos Lamas, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Alendronate Sodium, Jardiance. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Marcos Lamas, M.D. accept Medicare? ▼
Marcos Lamas, M.D. appears in CMS Medicare data with 1,139 Part D claims and 223 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Marcos Lamas, M.D.'s credentials? ▼
Marcos Lamas, M.D.'s NPI is 1154618700 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.