2026 NPPES data Obstetrics & Gynecology Physician NPI 1245807247 MD
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Duy Hoang Dinh, MD

Obstetrics & Gynecology Physician in Saint Louis, 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 44,313 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
102
Medicare Part D claims · 45 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Duy Hoang Dinh, MD filed 102 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in Saint Louis, Missouri.

102
Part D claims, 2023

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.

Duy Hoang Dinh, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

102 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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-eligible specialty (heuristic, not verified)

Duy Hoang Dinh, MD 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 Duy Hoang Dinh, MD?

Quality data not reported

NPI registry status

Active

Issued 06/08/2021

NPI 1245807247

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

102 43% vs specialty avg

2023 prescription claims

Specialty avg: 179

Specialty distribution in Missouri

How Obstetrics & Gynecology Physician compares to other specialties among Missouri providers

Missouri providers
Pharmacist - 4.8%Pharmacist4.8%Professional Counselor - 4.8%Professional Counselor4.8%Speech-Language Pathologist - 4.5%Speech-Language Pathologist4.5%Clinical Social Worker - 4.5%Clinical Social Worker4.5%Family Nurse Practitioner - 4.3%Family Nurse Practitioner4.3%Physical Therapist - 4%Physical Therapist4%Obstetrics & Gynecology Physician - 0.8%Obstetrics & Gynecology Physician0.8%
Largest specialties in Missouri (% of in-state 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:

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).

Duy Hoang Dinh, MD appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding MD credentials at 4901 FOREST PARK AVE, Saint Louis, MO, 63108, with a listed phone of (314) 454-8181. NPI 1245807247 was issued on 06/08/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Dinh most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 102 prescription claims written by this provider, covering 45 Medicare beneficiaries and totaling roughly $5K in drug spend, with an opioid prescribing rate of 28.4%. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

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

4901 FOREST PARK AVE
Saint Louis, MO 63108

Provider Details

NPI 1245807247
Specialty Obstetrics & Gynecology Physician
Credentials MD
Gender Male
NPI Issued 06/08/2021

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

102
Total Claims
$5K
Total Drug Cost
45
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
108
Total Day Supply
1,296
Generic Drug Cost
$3K
Opioid Claims
29 (28.4% rate)

Patient Demographics

Average Patient Age
67.3 years
Avg HCC Risk Score
1.07
Gender Split
100% female / 0% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Duy Hoang Dinh, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Oxycodone Hcl
26
Ondansetron Odt
Ondansetron
24
Ibuprofen
23

* 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 Duy Hoang Dinh, MD 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

Duy Hoang Dinh, MD's 102 claims are below 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 Dinh.

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.

Frequently Asked Questions

What is Duy Hoang Dinh, MD's specialty?
Duy Hoang Dinh, MD specializes in Obstetrics & Gynecology Physician and practices in Saint Louis, Missouri. Credentials: MD.
How much does Duy Hoang Dinh, MD prescribe under Medicare Part D?
In 2023, Duy Hoang Dinh, MD wrote 102 Medicare Part D claims totaling $5K in drug costs for 45 beneficiaries.
Where is Duy Hoang Dinh, MD located?
Duy Hoang Dinh, MD is located at 4901 FOREST PARK AVE, Saint Louis, MO, 63108. Phone: (314) 454-8181.
What is Duy Hoang Dinh, MD's NPI number?
Duy Hoang Dinh, MD's National Provider Identifier (NPI) is 1245807247, issued on 06/08/2021.
Does Duy Hoang Dinh, MD prescribe opioids?
Yes, Duy Hoang Dinh, MD had 29 opioid claims in 2023 with an opioid prescribing rate of 28.4%.
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 Duy Hoang Dinh, MD prescribe most often?
Based on 2023 Medicare Part D data, Duy Hoang Dinh, MD's most frequently prescribed drugs include Oxycodone Hcl, Ondansetron Odt, Ibuprofen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Duy Hoang Dinh, MD accept Medicare?
Duy Hoang Dinh, MD appears in CMS Medicare data with 102 Part D claims and 45 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Duy Hoang Dinh, MD's credentials?
Duy Hoang Dinh, MD's NPI is 1245807247 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

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.