NPI registry status
Active
2026 NPPES data Medical-Surgical Registered Nurse NPI 1477927093
Verify on CMS → Marisa Lam
Medical-Surgical Registered Nurse in New York, 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 3,721 in Medical-Surgical Registered Nurse, 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
2K
Medicare Part D claims · 158 beneficiaries · Medical-Surgical Registered Nurse avg: 941
Generic prescribing
71%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Marisa Lam filed 2,002 Medicare Part D claims in 2024 as a Medical-Surgical Registered Nurse in New York, New York, prescribing 71% generic.
- 2K
- Part D claims, 2024
- 71%
- generic prescribing
- ≥84th
- pct by Part D claim volume (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.
Federal trust snapshot
What official records show about Marisa Lam
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1477927093), first enumerated 11/19/2015.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 2,002 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- 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 Marisa Lam'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 1477927093 · Medical-Surgical Registered Nurse
NPI-10 · ENUM-MID · TAX-NARROW · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1477927093
- ENUM-MID 2015
- TAX-NARROW 3,721
- RX-MID 2,002
- BOOK-THIN 352 in New York
- PHOTO-ENUM Kristina Nowak · 2015
Marisa Lam's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
2,002 ≥ 84th percentile 84% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Marisa Lam?
Quality data not reportedPrimary specialty
Medical-Surgical Registered Nurse
Medicare Part D claims
2,002 113% vs specialty avg
Specialty distribution in New York
How Medical-Surgical Registered Nurse compares to other specialties among New York 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 Medical-Surgical Registered Nurse. Verify directly:
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 | 1477927093 |
|---|---|
| Specialty | Medical-Surgical Registered Nurse |
| Gender | Female |
| NPI Issued | 11/19/2015 |
Hospital and facility affiliations
Facilities where Marisa Lam 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.
New York City Health And Hospitals Corporation
New York, NY
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 Marisa Lam. To verify Marisa Lam'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 · Above average
Marisa Lam - brand share 26.0%
Medical-Surgical Registered Nurse average
26% brand-name claims vs 71% generic, on 2,002 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.
2,002
Total Claims
$271K
Total Drug Cost
158
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,279.2
- Total Day Supply
- 125,822
- Brand vs Generic
- 26% brand / 71% generic
- Brand Drug Cost
- $241K
- Generic Drug Cost
- $28K
- Antibiotic Claims
- 18
Patient Demographics
- Average Patient Age
- 71.0 years
- Avg HCC Risk Score
- 1.34
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 29, 65-74: 77, 75-84: 35, 85+: 17
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Marisa Lam prescribes most
Top Medicare Part D drugs by claim count, 2024
- Albuterol Sulfate …
Albuterol Sulfate Hfa
219 claims
- Atorvastatin Calcium
Atorvastatin Calcium
132 claims
- Amlodipine Besylate
Amlodipine Besylate
110 claims
- Fluticasone Propio…
Fluticasone Propionate
92 claims
- Rosuvastatin Calcium 79
Rosuvastatin Calcium
79 claims
- Lisinopril 77
Lisinopril
77 claims
- Losartan Potassium 68
Losartan Potassium
68 claims
- Montelukast Sodium 51
Montelukast Sodium
51 claims
| Drug | Claims |
|---|---|
| Albuterol Sulfate Hfa Albuterol Sulfate | 219 |
| Atorvastatin Calcium | 132 |
| Amlodipine Besylate | 110 |
| Fluticasone Propionate | 92 |
| Rosuvastatin Calcium | 79 |
| Lisinopril | 77 |
| Losartan Potassium | 68 |
| Montelukast Sodium | 51 |
| Dulera Mometasone/Formoterol | 42 |
| Hydrochlorothiazide | 42 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Medical-Surgical Registered Nurse Overview
How Marisa Lam fits within the Medical-Surgical Registered Nurse landscape nationally.
3,721
Medical-Surgical Registered Nurse Providers in US
54
States with Medical-Surgical Registered Nurse
941
Avg Claims per Provider
Marisa Lam's 2,002 claims are above the specialty average of 941.
Nationwide Medical-Surgical Registered Nurse peers with similar MIPS or enrollment year
Two federal-record peer sets for Lam, both outside New York so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2015)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Medical-Surgical Registered Nurse Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Lam.
One of 352 Medical-Surgical Registered Nurse providers enrolled in New York, 5 are shown here.
Sandra Achampong
RN
New York, NY
Olukemi Adebanjo
RN
Mineola, NY
Afolasade Adeniyi
Elmont, NY
Philip Adjapong
New York, NY
Salil Akhtar
RN
Bronx, NY
Compare Medical-Surgical Registered Nurse nationally: see state-by-state distribution →
Frequently Asked Questions
What is Marisa Lam's specialty? ▼
Marisa Lam specializes in Medical-Surgical Registered Nurse and practices in New York, New York.
How much does Marisa Lam prescribe under Medicare Part D? ▼
In 2024, Marisa Lam wrote 2,002 Medicare Part D claims totaling $271K in drug costs for 158 beneficiaries.
Where is Marisa Lam located? ▼
Marisa Lam is located at 227 MADISON ST, New York, NY, 10002. Phone: (212) 238-7000.
What is Marisa Lam's NPI number? ▼
Marisa Lam's National Provider Identifier (NPI) is 1477927093, issued on 11/19/2015.
Does Marisa Lam prescribe more brand-name or generic drugs? ▼
Marisa Lam's prescribing is 26% brand-name and 71% generic drugs by claim count, with $241K in brand drug costs.
How many Medical-Surgical Registered Nurse providers are there in the US? ▼
There are 3,721 Medical-Surgical Registered Nurse providers across 54 states in the US. The average Medical-Surgical Registered Nurse provider writes 941 Medicare Part D claims per year.
What drugs does Marisa Lam prescribe most often? ▼
Based on 2024 Medicare Part D data, Marisa Lam's most frequently prescribed drugs include Albuterol Sulfate Hfa, Atorvastatin Calcium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Marisa Lam accept Medicare? ▼
Marisa Lam appears in CMS Medicare data with 2,002 Part D claims and 158 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Marisa Lam's credentials? ▼
Marisa Lam's NPI is 1477927093. 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.
- 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.