NPI registry status
Active
2026 NPPES data Obstetrics Physician NPI 1669524765 MD
Verify on CMS → Milagros Diaz, MD
Obstetrics Physician in Woodbury, 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 1,396 in Obstetrics 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
365
Medicare Part D claims · 156 beneficiaries · Obstetrics Physician avg: 319
Generic prescribing
72%
generic claims · 28% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$124.28
3 payments · CMS Open Payments (Sunshine Act)
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
Milagros Diaz, MD filed 365 Medicare Part D claims in 2023 as a Obstetrics Physician in Woodbury, New York, prescribing 72% generic.
- 365
- Part D claims, 2023
- 72%
- 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.
Milagros Diaz, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
365 Top 43% higher than 57% 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
✓
Board certification likely (heuristic, not verified)
Milagros Diaz, MD 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 Milagros Diaz, MD?
Quality data not reportedPrimary specialty
Obstetrics Physician
Medicare Part D claims
365 14% vs specialty avg
Specialty distribution in New York
How Obstetrics Physician 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 Obstetrics 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).
Milagros Diaz, MD appears in the CMS NPPES registry as an Obstetrics Physician provider holding MD credentials at 157 FROEHLICH FARM BOULEVARD, Woodbury, NY, 11797, with a listed phone of (516) 921-3168. NPI 1669524765 was issued on 01/17/2007.
Medicare Part D records for calendar year 2023 show 365 prescription claims written by this provider, covering 156 Medicare beneficiaries and totaling roughly $47K in drug spend, split 28% brand-name and 72% generic by claim count.
Obstetrics Physician is a narrow specialty nationwide, with 1,396 enrolled providers across 54 states and an average of 319 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 | 1669524765 |
|---|---|
| Specialty | Obstetrics Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 01/17/2007 |
Hospital and facility affiliations
Facilities where Milagros Diaz, 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.
North Shore Lij Medical Group AT North Nassau, PC
Huntington, 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).
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 Milagros Diaz, MD. Source: openpaymentsdata.cms.gov.
Total received
$124
Largest payer
Astellas Pharma US Inc
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.
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 Milagros Diaz, MD. To verify Milagros Diaz, 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 · Above average
Milagros Diaz, MD - brand share 28.0%
Obstetrics Physician average
28% brand-name claims vs 72% generic, on 365 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.
365
Total Claims
$47K
Total Drug Cost
156
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 651
- Total Day Supply
- 17,303
- Brand vs Generic
- 28% brand / 72% generic
- Brand Drug Cost
- $35K
- Generic Drug Cost
- $12K
- Antibiotic Claims
- 50
Patient Demographics
- Average Patient Age
- 73.4 years
- Avg HCC Risk Score
- 0.92
- Gender Split
- 100% female / 0% male
- Age Distribution
- <65: 11, 65-74: 81, 75-84: 47, 85+: 17
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Milagros Diaz, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Clotrimazole-Betam…
Clotrimazole-Betamethasone
38 claims
- Estradiol
Estradiol
37 claims
- Betamethasone Vale…
Betamethasone Valerate
22 claims
- Nitrofurantoin Mon…
Nitrofurantoin Mono-Macro
21 claims
- Betamethasone Dipr… 13
Betamethasone Dipropionate
13 claims
- Vagifem 13
Vagifem
13 claims
- Raloxifene Hcl 12
Raloxifene Hcl
12 claims
- Prolia 11
Prolia
11 claims
| Drug | Claims |
|---|---|
| Clotrimazole-Betamethasone Clotrimazole/Betamethasone Dip | 38 |
| Estradiol | 37 |
| Betamethasone Valerate | 22 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 21 |
| Betamethasone Dipropionate | 13 |
| Vagifem Estradiol | 13 |
| Raloxifene Hcl | 12 |
| Prolia Denosumab | 11 |
| 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 Physician Overview
How Milagros Diaz, MD fits within the Obstetrics Physician landscape nationally.
1,396
Obstetrics Physician Providers in US
54
States with Obstetrics Physician
319
Avg Claims per Provider
Milagros Diaz, MD's 365 claims are above the specialty average of 319.
Nearby Obstetrics Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Diaz.
Dr. Khorsheda Ali
D.O.
Monticello, NY
Dr. Valerie Altmann
MD
Manhasset, NY
Dr. Heather Appelbaum
MD
Manhasset, NY
Dr. Anubha Arora
MD
Hawthorne, NY
Dr. Osasumwen Asemota
MD
Westbury, NY
Compare Obstetrics 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 New York medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Obstetrics 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 Milagros Diaz, MD's specialty? ▼
Milagros Diaz, MD specializes in Obstetrics Physician and practices in Woodbury, New York. Credentials: MD.
How much does Milagros Diaz, MD prescribe under Medicare Part D? ▼
In 2023, Milagros Diaz, MD wrote 365 Medicare Part D claims totaling $47K in drug costs for 156 beneficiaries.
Where is Milagros Diaz, MD located? ▼
Milagros Diaz, MD is located at 157 FROEHLICH FARM BOULEVARD, Woodbury, NY, 11797. Phone: (516) 921-3168.
What is Milagros Diaz, MD's NPI number? ▼
Milagros Diaz, MD's National Provider Identifier (NPI) is 1669524765, issued on 01/17/2007.
Does Milagros Diaz, MD prescribe more brand-name or generic drugs? ▼
Milagros Diaz, MD's prescribing is 28% brand-name and 72% generic drugs by claim count, with $35K in brand drug costs.
How many Obstetrics Physician providers are there in the US? ▼
There are 1,396 Obstetrics Physician providers across 54 states in the US. The average Obstetrics Physician provider writes 319 Medicare Part D claims per year.
What drugs does Milagros Diaz, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Milagros Diaz, MD's most frequently prescribed drugs include Clotrimazole-Betamethasone, Estradiol, Betamethasone Valerate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Milagros Diaz, MD accept Medicare? ▼
Milagros Diaz, MD appears in CMS Medicare data with 365 Part D claims and 156 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Milagros Diaz, MD's credentials? ▼
Milagros Diaz, MD's NPI is 1669524765 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 (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.
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.