NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1003856964 MD
Verify on CMS → Andrew Lan, MD
Internal Medicine Physician in Yonkers, New York.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 174,792 in Internal 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
9K
Medicare Part D claims · 1K beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
88%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.5 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Andrew Lan, MD reported a CMS MIPS final score of 100/100 - above the 83.5 national average - and filed 9,315 Medicare Part D claims in 2024.
- 100/100
- MIPS score · +17 vs avg
- 9K
- Part D claims, 2024
- 88%
- 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.
Federal trust snapshot
What official records show about Andrew Lan, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1003856964), first enumerated 06/08/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 9,315 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 100/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
New York statewide board action statistics are published annually — these figures describe aggregate state activity, not Andrew Lan, MD's individual license status. Verify directly with the state medical board.
Source: NYSBPMC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1003856964 · Internal Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-ELITE · RX-MID · BOOK-MID · PHOTO-FINISH
- NPI-10 1003856964
- ENUM-LEGACY 2006
- TAX-MEGA 175K Internal Medicine
- MIPS-ELITE 100/100
- RX-MID 9,315
- BOOK-MID 13,725 in New York
- PHOTO-FINISH Zina Al-Sabbagh, MD · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Lan · this provi…
Lan · this provider
100 MIPS pts
- Shoma Bommena, M…
Shoma Bommena, M. D.
100 MIPS pts
- Zina Al-Sabbagh,…
Zina Al-Sabbagh, MD
100 MIPS pts
- Kristian Balle, …
Kristian Balle, DO
100 MIPS pts
- Surekha Bandlamu…
Surekha Bandlamuri, M.D.
100 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Andrew Lan, MD'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.
100 ≥ 92nd percentile 92% 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 Andrew Lan, MD sits
This provider among internal medicine physician peers
Across the 34,612 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Andrew Lan, MD writes more Part D claims than 92% of them and scores higher on MIPS quality than 93% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one internal medicine physician peer from a representative sample of 60; the gold marker is Andrew Lan, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Andrew Lan, MD 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 Andrew Lan, MD?
High performer (top quartile)Primary specialty
Internal Medicine Physician
Medicare Part D claims
9,315 234% vs specialty avg
MIPS final score
100/100 16.5 pts vs avg
Specialty distribution in New York
How Internal Medicine Physician compares to other specialties among New York providers
Medicare quality performance, MIPS
Andrew Lan, MD's 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 100/100
- 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 | 1003856964 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/08/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Measured-score avg: 83.5
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Andrew Lan, MD 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.
Montefiore Medical Center
★★★☆☆ 3/5
Bronx, NY
Acute Care Hospitals
CMS CCN: 330059
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 - New York NYSBPMC 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 ~100K New York medical licensees in 2023 - they are NOT specific to Andrew Lan, MD. To verify Andrew Lan, MD's current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases
NYSBPMC 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 New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Andrew Lan, MD - brand share 11.0%
Internal Medicine Physician average
11% brand-name claims vs 88% generic, on 9,315 2024 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 2024.
9,315
Total Claims
$838K
Total Drug Cost
1,189
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 22,493.4
- Total Day Supply
- 667,049
- Brand vs Generic
- 11% brand / 88% generic
- Brand Drug Cost
- $709K
- Generic Drug Cost
- $121K
- Opioid Claims
- 87 (0.9% rate)
- Antibiotic Claims
- 40
Patient Demographics
- Average Patient Age
- 76.2 years
- Avg HCC Risk Score
- 1.20
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 98, 65-74: 437, 75-84: 408, 85+: 246
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Andrew Lan, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Amlodipine Besylate
Amlodipine Besylate
885 claims
- Atorvastatin Calcium
Atorvastatin Calcium
657 claims
- Losartan Potassium
Losartan Potassium
457 claims
- Hydrochlorothiazide
Hydrochlorothiazide
452 claims
- Metoprolol Succinate
Metoprolol Succinate
395 claims
- Metformin Hcl
Metformin Hcl
394 claims
- Lisinopril
Lisinopril
354 claims
- Simvastatin 323
Simvastatin
323 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 885 |
| Atorvastatin Calcium | 657 |
| Losartan Potassium | 457 |
| Hydrochlorothiazide | 452 |
| Metoprolol Succinate | 395 |
| Metformin Hcl | 394 |
| Lisinopril | 354 |
| Simvastatin | 323 |
| Levothyroxine Sodium | 239 |
| Rosuvastatin Calcium | 183 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Andrew Lan, MD fits within the Internal Medicine Physician landscape nationally.
174,792
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,785
Avg Claims per Provider
Andrew Lan, MD's 9,315 claims are above the specialty average of 2,785.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Lan, both outside New York so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (100 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Internal Medicine Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Lan.
One of 13,725 Internal Medicine Physician providers enrolled in New York, 5 are shown here.
Dr. Deborah Aanonsen
D.O.
Staten Island, NY
Dr. Nivedita Aanur
M.D.
New York, NY
Dr. Jay Aaron
MD
Great Neck, NY
Dr. Justin Aaron
MD
New York, NY
Ahmad Abadi
Poughkeepsie, NY
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Andrew Lan, MD's specialty? ▼
Andrew Lan, MD specializes in Internal Medicine Physician and practices in Yonkers, New York. Credentials: MD.
How much does Andrew Lan, MD prescribe under Medicare Part D? ▼
In 2024, Andrew Lan, MD wrote 9,315 Medicare Part D claims totaling $838K in drug costs for 1,189 beneficiaries.
What is Andrew Lan, MD's Medicare quality score? ▼
Andrew Lan, MD has a CMS MIPS Final Score of 100/100. 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 Andrew Lan, MD located? ▼
Andrew Lan, MD is located at 1010 CENTRAL PARK AVE, Yonkers, NY, 10704. Phone: (914) 964-4000.
What is Andrew Lan, MD's NPI number? ▼
Andrew Lan, MD's National Provider Identifier (NPI) is 1003856964, issued on 06/08/2006.
Does Andrew Lan, MD prescribe more brand-name or generic drugs? ▼
Andrew Lan, MD's prescribing is 11% brand-name and 88% generic drugs by claim count, with $709K in brand drug costs.
Does Andrew Lan, MD prescribe opioids? ▼
Yes, Andrew Lan, MD had 87 opioid claims in 2024 with an opioid prescribing rate of 0.9%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 174,792 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,785 Medicare Part D claims per year.
What drugs does Andrew Lan, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Andrew Lan, MD's most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Andrew Lan, MD accept Medicare? ▼
Andrew Lan, MD appears in CMS Medicare data with 9,315 Part D claims and 1,189 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Andrew Lan, MD's credentials? ▼
Andrew Lan, MD's NPI is 1003856964 with credentials MD. 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.