NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1770537144 MD
Verify on CMS → Christine Hoang, MD
Obstetrics & Gynecology Physician in Westminster, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 45,074 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
164
Medicare Part D claims · 92 beneficiaries · Obstetrics & Gynecology Physician avg: 188
Generic prescribing
66%
generic claims · 34% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$2.9K
34 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Christine Hoang, MD filed 164 Medicare Part D claims in 2024 as an Obstetrics & Gynecology Physician in Westminster, California, prescribing 66% generic.
- 164
- Part D claims, 2024
- 66%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥34th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Christine Hoang, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1770537144), first enumerated 05/20/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 164 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$2.9K in reported industry payments (34 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Christine Hoang, MD's individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1770537144 · Obstetrics & Gynecology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-MID · PHOTO-ENUM
- NPI-10 1770537144
- ENUM-LEGACY 2006
- TAX-MID 45K Obstetrics &
- RX-LIGHT 164
- BOOK-MID 5,004 in California
- PHOTO-ENUM Sarah Logan · 2006
Christine Hoang, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
164 ≥ 34th percentile 34% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Christine Hoang, 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 Christine Hoang, MD?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
164 13% vs specialty avg
Specialty distribution in California
How Obstetrics & Gynecology Physician compares to other specialties among California 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).
Practice Address
Provider Details
| NPI | 1770537144 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/20/2006 |
Hospital and facility affiliations
Facilities where Christine Hoang, 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.
Bolsa Medical Group
Westminster, CA
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 Christine Hoang, MD. Source: openpaymentsdata.cms.gov.
Total received
$2.9K
Largest payer
Phathom Pharmaceuticals, 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 - California MBC 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 ~150K California medical licensees in 2023 - they are NOT specific to Christine Hoang, MD. To verify Christine Hoang, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Above average
Christine Hoang, MD - brand share 34.0%
Obstetrics & Gynecology Physician average
34% brand-name claims vs 66% generic, on 164 2024 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 2024.
164
Total Claims
$51K
Total Drug Cost
92
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 367.067
- Total Day Supply
- 10,631
- Brand vs Generic
- 34% brand / 66% generic
- Brand Drug Cost
- $48K
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 70.6 years
- Avg HCC Risk Score
- 0.98
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Christine Hoang, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Alendronate Sodium
Alendronate Sodium
46 claims
- Premarin
Premarin
31 claims
- Clotrimazole-Betam… 17
Clotrimazole-Betamethasone
17 claims
- Estradiol 16
Estradiol
16 claims
| Drug | Claims |
|---|---|
| Alendronate Sodium | 46 |
| Premarin Estrogens, Conjugated | 31 |
| Clotrimazole-Betamethasone Clotrimazole/Betamethasone Dip | 17 |
| Estradiol | 16 |
* 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 Christine Hoang, MD fits within the Obstetrics & Gynecology Physician landscape nationally.
45,074
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
188
Avg Claims per Provider
Christine Hoang, MD's 164 claims are below the specialty average of 188.
Nationwide Obstetrics & Gynecology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Hoang, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Obstetrics & Gynecology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Hoang.
One of 5,004 Obstetrics & Gynecology Physician providers enrolled in California, 5 are shown here.
Dr. Ingrid Aalami
MD
San Jose, CA
Dr. Avisa Abaian- Eagar
M.D.
Orange, CA
Dr. Derek Abbassi
MD
Walnut Creek, CA
Dr. Nicole Abell
DO
Ventura, CA
Zachary Abelson
Los Angeles, CA
Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Christine Hoang, MD's specialty? ▼
Christine Hoang, MD specializes in Obstetrics & Gynecology Physician and practices in Westminster, California. Credentials: MD.
How much does Christine Hoang, MD prescribe under Medicare Part D? ▼
In 2024, Christine Hoang, MD wrote 164 Medicare Part D claims totaling $51K in drug costs for 92 beneficiaries.
Where is Christine Hoang, MD located? ▼
Christine Hoang, MD is located at 10362 BOLSA AVE, Westminster, CA, 92683. Phone: (714) 531-2091.
What is Christine Hoang, MD's NPI number? ▼
Christine Hoang, MD's National Provider Identifier (NPI) is 1770537144, issued on 05/20/2006.
Does Christine Hoang, MD prescribe more brand-name or generic drugs? ▼
Christine Hoang, MD's prescribing is 34% brand-name and 66% generic drugs by claim count, with $48K in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 45,074 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 188 Medicare Part D claims per year.
What drugs does Christine Hoang, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Christine Hoang, MD's most frequently prescribed drugs include Alendronate Sodium, Premarin, Clotrimazole-Betamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Christine Hoang, MD accept Medicare? ▼
Christine Hoang, MD appears in CMS Medicare data with 164 Part D claims and 92 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Christine Hoang, MD's credentials? ▼
Christine Hoang, MD's NPI is 1770537144 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.