NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1336108992 M.D.
Verify on CMS → Carlos Alarcon, M.D.
Obstetrics & Gynecology Physician in Glen Burnie, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 44,313 in Obstetrics & Gynecology 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
127
Medicare Part D claims · 46 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Carlos Alarcon, M.D. filed 127 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in Glen Burnie, Maryland, prescribing 76% generic.
- 127
- Part D claims, 2023
- 76%
- generic prescribing
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.
Carlos Alarcon, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
127 35th percentile higher than 35% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
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Board-eligible specialty (heuristic, not verified)
Carlos Alarcon, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Carlos Alarcon, M.D.?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
127 29% vs specialty avg
Specialty distribution in Maryland
How Obstetrics & Gynecology Physician compares to other specialties among Maryland 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 Obstetrics & Gynecology 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).
Carlos Alarcon, M.D. appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding M.D. credentials at 325 HOSPITAL DR STE 209, Glen Burnie, MD, 21061, with a listed phone of (410) 766-5656. NPI 1336108992 was issued on 03/22/2006.
Medicare Part D records for calendar year 2023 show 127 prescription claims written by this provider, covering 46 Medicare beneficiaries and totaling roughly $27K in drug spend, split 24% brand-name and 76% generic by claim count.
Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,313 enrolled providers across 56 states and an average of 179 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 | 1336108992 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 03/22/2006 |
Brand vs generic prescribing mix · Typical
Carlos Alarcon, M.D. - brand share 24.0%
Obstetrics & Gynecology Physician average
24% brand-name claims vs 76% generic, on 127 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.
127
Total Claims
$27K
Total Drug Cost
46
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 306
- Total Day Supply
- 8,615
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $17K
- Generic Drug Cost
- $9K
- Antibiotic Claims
- 11
Patient Demographics
- Average Patient Age
- 70.1 years
- Avg HCC Risk Score
- 0.75
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Estradiol | 39 |
| Premarin "Estrogens | N/A |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Obstetrics & Gynecology Physician Overview
How Carlos Alarcon, M.D. fits within the Obstetrics & Gynecology Physician landscape nationally.
44,313
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider
Carlos Alarcon, M.D.'s 127 claims are below the specialty average of 179.
Nearby Obstetrics & Gynecology Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Alarcon.
Fouad Abbas
Baltimore, MD
Dr. Alexandra Abbate
MD
Baltimore, MD
Dr. Basma Abdo
M.D
Baltimore, MD
Dr. Tolani Abdulkadir
MD
Baltimore, MD
Dr. Sozdar Abed
MD
Easton, MD
Compare Obstetrics & Gynecology 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 Maryland medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Obstetrics & Gynecology 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 Carlos Alarcon, M.D.'s specialty? ▼
Carlos Alarcon, M.D. specializes in Obstetrics & Gynecology Physician and practices in Glen Burnie, Maryland. Credentials: M.D..
How much does Carlos Alarcon, M.D. prescribe under Medicare Part D? ▼
In 2023, Carlos Alarcon, M.D. wrote 127 Medicare Part D claims totaling $27K in drug costs for 46 beneficiaries.
Where is Carlos Alarcon, M.D. located? ▼
Carlos Alarcon, M.D. is located at 325 HOSPITAL DR STE 209, Glen Burnie, MD, 21061. Phone: (410) 766-5656.
What is Carlos Alarcon, M.D.'s NPI number? ▼
Carlos Alarcon, M.D.'s National Provider Identifier (NPI) is 1336108992, issued on 03/22/2006.
Does Carlos Alarcon, M.D. prescribe more brand-name or generic drugs? ▼
Carlos Alarcon, M.D.'s prescribing is 24% brand-name and 76% generic drugs by claim count, with $17K in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 44,313 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does Carlos Alarcon, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Carlos Alarcon, M.D.'s most frequently prescribed drugs include Estradiol, Premarin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Carlos Alarcon, M.D. accept Medicare? ▼
Carlos Alarcon, M.D. appears in CMS Medicare data with 127 Part D claims and 46 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Carlos Alarcon, M.D.'s credentials? ▼
Carlos Alarcon, M.D.'s NPI is 1336108992 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.
- 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
Compiled from official public sources by the PlainDoctor editorial team.