NPI registry status
Active
2026 NPPES data Neurology Physician NPI 1992781595 M.D.
Verify on CMS → Carmen Serrano, M.D.
Neurology Physician in San Juan, Puerto Rico.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 20,467 in Neurology 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
861
Medicare Part D claims · 85 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$114.03
4 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Carmen Serrano, M.D. filed 861 Medicare Part D claims in 2024 as a Neurology Physician in San Juan, Puerto Rico, prescribing 81% generic.
- 861
- Part D claims, 2024
- 81%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥72nd
- 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 Carmen Serrano, M.D.
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 1992781595), first enumerated 12/16/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 861 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- 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
- Reported
Industry payment transparency
$114.03 in reported industry payments (4 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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 1992781595 · Neurology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1992781595
- ENUM-LEGACY 2005
- TAX-MID 20K Neurology Physician
- RX-LIGHT 861
- BOOK-THIN 117 in Puerto Rico
- PHOTO-ENUM Hal Dickson · 2005
Carmen Serrano, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
861 ≥ 72nd percentile 72% 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
✓
Board certification likely (heuristic, not verified)
Carmen Serrano, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Carmen Serrano, M.D.?
Quality data not reportedPrimary specialty
Neurology Physician
Medicare Part D claims
861 37% vs specialty avg
Specialty distribution in Puerto Rico
How Neurology Physician compares to other specialties among Puerto Rico 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 Neurology Physician. 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 | 1992781595 |
|---|---|
| Specialty | Neurology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 12/16/2005 |
Hospital and facility affiliations
Facilities where Carmen Serrano, 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.
Recinto DE Ciencias Medicas
San Juan, PR
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Carmen Serrano, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$114
Largest payer
Novartis Pharmaceuticals Corporation
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Typical
Carmen Serrano, M.D. - brand share 19.0%
Neurology Physician average
19% brand-name claims vs 81% generic, on 861 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.
861
Total Claims
$275K
Total Drug Cost
85
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 989
- Total Day Supply
- 29,200
- Brand vs Generic
- 19% brand / 81% generic
- Brand Drug Cost
- $260K
- Generic Drug Cost
- $15K
Patient Demographics
- Average Patient Age
- 74.0 years
- Avg HCC Risk Score
- 1.65
- Gender Split
- 55% female / 45% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Carmen Serrano, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Carbidopa-Levodopa
Carbidopa-Levodopa
138 claims
- Rytary
Rytary
65 claims
- Memantine Hcl
Memantine Hcl
56 claims
- Donepezil Hcl 53
Donepezil Hcl
53 claims
- Carbidopa-Levodopa… 45
Carbidopa-Levodopa Er
45 claims
- Clonazepam 41
Clonazepam
41 claims
- Gabapentin 40
Gabapentin
40 claims
- Baclofen 33
Baclofen
33 claims
| Drug | Claims |
|---|---|
| Carbidopa-Levodopa Carbidopa/Levodopa | 138 |
| Rytary Carbidopa/Levodopa | 65 |
| Memantine Hcl | 56 |
| Donepezil Hcl | 53 |
| Carbidopa-Levodopa Er Carbidopa/Levodopa | 45 |
| Clonazepam | 41 |
| Gabapentin | 40 |
| Baclofen | 33 |
| Carbidopa-Levodopa-Entacapone Carbidopa/Levodopa/Entacapone | 33 |
| Pramipexole Dihydrochloride Pramipexole Di-Hcl | 32 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurology Physician Overview
How Carmen Serrano, M.D. fits within the Neurology Physician landscape nationally.
20,467
Neurology Physician Providers in US
54
States with Neurology Physician
1,356
Avg Claims per Provider
Carmen Serrano, M.D.'s 861 claims are below the specialty average of 1,356.
Nationwide Neurology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Serrano, both outside Puerto Rico so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Neurology Physician Providers in Puerto Rico
Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as Serrano.
One of 117 Neurology Physician providers enrolled in Puerto Rico, 5 are shown here.
Dr. Jose Acevedo
MD
Mayaguez, PR
Dr. Iris Acevedo-Marty
M.D.
Aguadilla, PR
Dr. Heriberto Acosta
M.D.
San Juan, PR
Dr. Marelisa Albelo Martinez
MD
San Juan, PR
Dr. Gishlaine Alfonso
MD
Hato Rey, PR
Compare Neurology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Carmen Serrano, M.D.'s specialty? ▼
Carmen Serrano, M.D. specializes in Neurology Physician and practices in San Juan, Puerto Rico. Credentials: M.D..
How much does Carmen Serrano, M.D. prescribe under Medicare Part D? ▼
In 2024, Carmen Serrano, M.D. wrote 861 Medicare Part D claims totaling $275K in drug costs for 85 beneficiaries.
Where is Carmen Serrano, M.D. located? ▼
Carmen Serrano, M.D. is located at UNIV PUERTO RICO MEDICAL, San Juan, PR, 00935. Phone: (787) 754-0101.
What is Carmen Serrano, M.D.'s NPI number? ▼
Carmen Serrano, M.D.'s National Provider Identifier (NPI) is 1992781595, issued on 12/16/2005.
Does Carmen Serrano, M.D. prescribe more brand-name or generic drugs? ▼
Carmen Serrano, M.D.'s prescribing is 19% brand-name and 81% generic drugs by claim count, with $260K in brand drug costs.
How many Neurology Physician providers are there in the US? ▼
There are 20,467 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,356 Medicare Part D claims per year.
What drugs does Carmen Serrano, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Carmen Serrano, M.D.'s most frequently prescribed drugs include Carbidopa-Levodopa, Rytary, Memantine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Carmen Serrano, M.D. accept Medicare? ▼
Carmen Serrano, M.D. appears in CMS Medicare data with 861 Part D claims and 85 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Carmen Serrano, M.D.'s credentials? ▼
Carmen Serrano, M.D.'s NPI is 1992781595 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 (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.