NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1881786960 MD
Verify on CMS → Joseph Hazan, MD
Obstetrics & Gynecology Physician in St Peters, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 44,326 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
542
Medicare Part D claims · 135 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Industry payments
$99.02
4 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Joseph Hazan, MD filed 542 Medicare Part D claims in 2023 as an Obstetrics & Gynecology Physician in St Peters, Missouri.
- 542
- 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.
Joseph Hazan, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
542 Top 34% higher than 66% 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)
Joseph Hazan, 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 Joseph Hazan, MD?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
542 203% vs specialty avg
Specialty distribution in Missouri
How Obstetrics & Gynecology Physician compares to other specialties among Missouri 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).
Joseph Hazan, MD appears in the CMS NPPES registry as an Obstetrics & Gynecology Physician provider holding MD credentials at 4200 N CLOVERLEAF DR, St Peters, MO, 63376, with a listed phone of (636) 928-1800. NPI 1881786960 was issued on 09/28/2006.
Medicare Part D records for calendar year 2023 show 542 prescription claims written by this provider, covering 135 Medicare beneficiaries and totaling roughly $26K in drug spend.
Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,326 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 | 1881786960 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 09/28/2006 |
Hospital and facility affiliations
Facilities where Joseph Hazan, 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.
Mcpherson Medical And Diagnostic LLC
Saint Louis, MO
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 Joseph Hazan, MD. Source: openpaymentsdata.cms.gov.
Total received
$99
Largest payer
Sumitomo Pharma America, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
542
Total Claims
$26K
Total Drug Cost
135
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,096
- Total Day Supply
- 29,003
- Generic Drug Cost
- $9K
- Antibiotic Claims
- 57
Patient Demographics
- Average Patient Age
- 67.8 years
- Avg HCC Risk Score
- 1.04
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Joseph Hazan, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Alendronate Sodium
Alendronate Sodium
203 claims
- Fluconazole 46
Fluconazole
46 claims
- Metronidazole 25
Metronidazole
25 claims
- Vitamin D2 23
Vitamin D2
23 claims
- Estradiol 19
Estradiol
19 claims
- Acyclovir 18
Acyclovir
18 claims
- Valacyclovir 18
Valacyclovir
18 claims
- Nitrofurantoin Mon… 17
Nitrofurantoin Mono-Macro
17 claims
| Drug | Claims |
|---|---|
| Alendronate Sodium | 203 |
| Fluconazole | 46 |
| Metronidazole | 25 |
| Vitamin D2 Ergocalciferol (Vitamin D2) | 23 |
| Estradiol | 19 |
| Acyclovir | 18 |
| Valacyclovir Valacyclovir Hcl | 18 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 17 |
| Letrozole | 16 |
| Myrbetriq Mirabegron | 15 |
* 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 Joseph Hazan, MD fits within the Obstetrics & Gynecology Physician landscape nationally.
44,326
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider
Joseph Hazan, MD's 542 claims are above the specialty average of 179.
Nearby Obstetrics & Gynecology Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Hazan.
Dr. Pamela Adams
MD
Saint Louis, MO
Dr. Allie Adrian
MD
Saint Louis, MO
Dr. Mona Afrassiab
DO
Osage Beach, MO
Dr. Christoper Ahlering
M.D.
Saint Louis, MO
Dr. Sandra Ahlum
M.D.
Hannibal, MO
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 Missouri 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 Joseph Hazan, MD's specialty? ▼
Joseph Hazan, MD specializes in Obstetrics & Gynecology Physician and practices in St Peters, Missouri. Credentials: MD.
How much does Joseph Hazan, MD prescribe under Medicare Part D? ▼
In 2023, Joseph Hazan, MD wrote 542 Medicare Part D claims totaling $26K in drug costs for 135 beneficiaries.
Where is Joseph Hazan, MD located? ▼
Joseph Hazan, MD is located at 4200 N CLOVERLEAF DR, St Peters, MO, 63376. Phone: (636) 928-1800.
What is Joseph Hazan, MD's NPI number? ▼
Joseph Hazan, MD's National Provider Identifier (NPI) is 1881786960, issued on 09/28/2006.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 44,326 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 Joseph Hazan, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Joseph Hazan, MD's most frequently prescribed drugs include Alendronate Sodium, Fluconazole, Metronidazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joseph Hazan, MD accept Medicare? ▼
Joseph Hazan, MD appears in CMS Medicare data with 542 Part D claims and 135 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joseph Hazan, MD's credentials? ▼
Joseph Hazan, MD's NPI is 1881786960 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
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.