NPI registry status
Active
2026 NPPES data Gynecology Physician NPI 1770573891 M.D.
Verify on CMS → William Delapaz, M.D.
Gynecology Physician in Waldorf, 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 3,906 in 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
41
Medicare Part D claims · 13 beneficiaries · Gynecology Physician avg: 295
MIPS score
80.2/100
▼ 3 pts below national avg 83.1 · Above neutral
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
William Delapaz, M.D. reported a CMS MIPS final score of 80.2/100 - below the 83.1 national average - and filed 41 Medicare Part D claims in 2023.
- 80.2/100
- MIPS score · -3 vs avg
- 41
- Part D claims, 2023
- 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.
William Delapaz, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
80 33rd percentile higher than 33% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where William Delapaz, M.D. sits
This provider among gynecology physician peers
Across the 551 gynecology physician providers who report both Medicare Part D prescribing and a MIPS quality score, William Delapaz, M.D. writes more Part D claims than 11% of them and scores higher on MIPS quality than 27% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one gynecology physician peer from a representative sample of 60; the gold marker is William Delapaz, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
William Delapaz, 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 William Delapaz, M.D.?
Near national averagePrimary specialty
Gynecology Physician
Medicare Part D claims
41 86% vs specialty avg
MIPS final score
80.2/100 2.9 pts vs avg
Specialty distribution in Maryland
How Gynecology Physician compares to other specialties among Maryland providers
Medicare quality performance, MIPS
William Delapaz, M.D.'s 2023 MIPS final score plotted against the Gynecology Physician national average
- MIPS Final Score
- 80.2/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Gynecology Physician) - 80.2/100 vs national avg 83.1
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).
William Delapaz, M.D. appears in the CMS NPPES registry as a Gynecology Physician provider holding M.D. credentials at 11340 PEMBROOKE SQ, Waldorf, MD, 20603, with a listed phone of (301) 843-7737. NPI 1770573891 was issued on 10/28/2005.
Medicare Part D records for calendar year 2023 show 41 prescription claims written by this provider, covering 13 Medicare beneficiaries and totaling roughly $1K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 80.2/100 for the 2023 performance year (Quality 76.7, Cost 53.5), compared with the national average of 83.1.
Gynecology Physician is a narrow specialty nationwide, with 3,906 enrolled providers across 53 states and an average of 295 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 | 1770573891 |
|---|---|
| Specialty | Gynecology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/28/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
80.1797
Final Score
Avg: 83.1
76.6904
Quality
53.4937
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where William Delapaz, 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.
Medstar Medical Group II LLC
Charlotte Hall, MD
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
41
Total Claims
$1K
Total Drug Cost
13
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 64
- Total Day Supply
- 1,374
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 65.5 years
- Avg HCC Risk Score
- 1.01
- Gender Split
- 100% female / 0% male
Gynecology Physician Overview
How William Delapaz, M.D. fits within the Gynecology Physician landscape nationally.
3,906
Gynecology Physician Providers in US
53
States with Gynecology Physician
295
Avg Claims per Provider
William Delapaz, M.D.'s 41 claims are below the specialty average of 295.
Nearby Gynecology Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Delapaz.
Dr. Brittany Abbate
PA
Columbia, MD
Dr. Brittany Acree
M.D.
Annapolis, MD
Dr. Beth Aronson
M.D.
Baltimore, MD
Dr. Davoud Assili
MD
Lanham, MD
Dr. Michael Attardi
MD
Hagerstown, MD
Compare 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 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 William Delapaz, M.D.'s specialty? ▼
William Delapaz, M.D. specializes in Gynecology Physician and practices in Waldorf, Maryland. Credentials: M.D..
How much does William Delapaz, M.D. prescribe under Medicare Part D? ▼
In 2023, William Delapaz, M.D. wrote 41 Medicare Part D claims totaling $1K in drug costs for 13 beneficiaries.
What is William Delapaz, M.D.'s Medicare quality score? ▼
William Delapaz, M.D. has a CMS MIPS Final Score of 80.2/100 (Quality: 76.7, Cost: 53.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is William Delapaz, M.D. located? ▼
William Delapaz, M.D. is located at 11340 PEMBROOKE SQ, Waldorf, MD, 20603. Phone: (301) 843-7737.
What is William Delapaz, M.D.'s NPI number? ▼
William Delapaz, M.D.'s National Provider Identifier (NPI) is 1770573891, issued on 10/28/2005.
How many Gynecology Physician providers are there in the US? ▼
There are 3,906 Gynecology Physician providers across 53 states in the US. The average Gynecology Physician provider writes 295 Medicare Part D claims per year.
Does William Delapaz, M.D. accept Medicare? ▼
William Delapaz, M.D. appears in CMS Medicare data with 41 Part D claims and 13 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Delapaz, M.D.'s credentials? ▼
William Delapaz, M.D.'s NPI is 1770573891 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
Compiled from official public sources by the PlainDoctor editorial team.
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.