NPI registry status
Active
2026 NPPES data Adult Medicine Physician NPI 1689098162 DO
Verify on CMS → Thanh Ha, DO
Adult Medicine Physician in Downey, 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 2,481 in Adult Medicine 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
3K
Medicare Part D claims · 324 beneficiaries · Adult Medicine Physician avg: 3K
Generic prescribing
91%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Thanh Ha, DO filed 3,486 Medicare Part D claims in 2023 as a Adult Medicine Physician in Downey, California, prescribing 91% generic.
- 3K
- Part D claims, 2023
- 91%
- 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.
Thanh Ha, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,486 Top 10% higher than 90% 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)
Thanh Ha, DO 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 Thanh Ha, DO?
Quality data not reportedPrimary specialty
Adult Medicine Physician
Medicare Part D claims
3,486 24% vs specialty avg
Specialty distribution in California
How Adult Medicine 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 Adult Medicine 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).
Thanh Ha, DO appears in the CMS NPPES registry as an Adult Medicine Physician provider holding DO credentials at 11500 BROOKSHIRE AVE, Downey, CA, 90241, with a listed phone of (510) 209-8382. NPI 1689098162 was issued on 02/05/2014.
Medicare Part D records for calendar year 2023 show 3,486 prescription claims written by this provider, covering 324 Medicare beneficiaries and totaling roughly $219K in drug spend, split 8% brand-name and 91% generic by claim count, with an opioid prescribing rate of 3.8%.
Adult Medicine Physician is a narrow specialty nationwide, with 2,481 enrolled providers across 52 states and an average of 2,807 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 | 1689098162 |
|---|---|
| Specialty | Adult Medicine Physician |
| Credentials | DO |
| Gender | Female |
| NPI Issued | 02/05/2014 |
Hospital and facility affiliations
Facilities where Thanh Ha, DO 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.
Southern California Permanente Medical Group
Garden Grove, 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).
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 Thanh Ha, DO. To verify Thanh Ha, DO'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 · Generic-heavy
Thanh Ha, DO - brand share 8.0%
Adult Medicine Physician average
8% brand-name claims vs 91% generic, on 3,486 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.
3,486
Total Claims
$219K
Total Drug Cost
324
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,560
- Total Day Supply
- 281,278
- Brand vs Generic
- 8% brand / 91% generic
- Brand Drug Cost
- $155K
- Generic Drug Cost
- $62K
- Opioid Claims
- 132 (3.8% rate)
- Antibiotic Claims
- 105
Patient Demographics
- Average Patient Age
- 73.4 years
- Avg HCC Risk Score
- 1.14
- Gender Split
- 66% female / 34% male
- Age Distribution
- <65: 21, 65-74: 168, 75-84: 108, 85+: 27
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Thanh Ha, DO prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
269 claims
- Losartan Potassium
Losartan Potassium
163 claims
- Amlodipine Besylate
Amlodipine Besylate
159 claims
- Lisinopril
Lisinopril
157 claims
- Atenolol
Atenolol
125 claims
- Metformin Hcl 96
Metformin Hcl
96 claims
- Alendronate Sodium 93
Alendronate Sodium
93 claims
- Omeprazole 90
Omeprazole
90 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 269 |
| Losartan Potassium | 163 |
| Amlodipine Besylate | 159 |
| Lisinopril | 157 |
| Atenolol | 125 |
| Metformin Hcl | 96 |
| Alendronate Sodium | 93 |
| Omeprazole | 90 |
| Levothyroxine Sodium | 88 |
| Rosuvastatin Calcium | 79 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Adult Medicine Physician Overview
How Thanh Ha, DO fits within the Adult Medicine Physician landscape nationally.
2,481
Adult Medicine Physician Providers in US
52
States with Adult Medicine Physician
2,807
Avg Claims per Provider
Thanh Ha, DO's 3,486 claims are above the specialty average of 2,807.
Nearby Adult Medicine Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Ha.
Dr. Mina Abazari
M.D.
San Juan Capistrano, CA
Dr. Derrick Adams
D.O.
Lincoln, CA
Dr. Abhishek Agarwal
M.D.
Roseville, CA
Dr. Marie Agleham
MD
Union City, CA
Dr. Ahmad Ahmadzia
M.D.
Fair Oaks, CA
Compare Adult Medicine 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 California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Adult Medicine 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.
Healthcare Guides
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Medical Specialties Explained
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Understanding Medicare Claims Data
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Frequently Asked Questions
What is Thanh Ha, DO's specialty? ▼
Thanh Ha, DO specializes in Adult Medicine Physician and practices in Downey, California. Credentials: DO.
How much does Thanh Ha, DO prescribe under Medicare Part D? ▼
In 2023, Thanh Ha, DO wrote 3,486 Medicare Part D claims totaling $219K in drug costs for 324 beneficiaries.
Where is Thanh Ha, DO located? ▼
Thanh Ha, DO is located at 11500 BROOKSHIRE AVE, Downey, CA, 90241. Phone: (510) 209-8382.
What is Thanh Ha, DO's NPI number? ▼
Thanh Ha, DO's National Provider Identifier (NPI) is 1689098162, issued on 02/05/2014.
Does Thanh Ha, DO prescribe more brand-name or generic drugs? ▼
Thanh Ha, DO's prescribing is 8% brand-name and 91% generic drugs by claim count, with $155K in brand drug costs.
Does Thanh Ha, DO prescribe opioids? ▼
Yes, Thanh Ha, DO had 132 opioid claims in 2023 with an opioid prescribing rate of 3.8%.
How many Adult Medicine Physician providers are there in the US? ▼
There are 2,481 Adult Medicine Physician providers across 52 states in the US. The average Adult Medicine Physician provider writes 2,807 Medicare Part D claims per year.
What drugs does Thanh Ha, DO prescribe most often? ▼
Based on 2023 Medicare Part D data, Thanh Ha, DO's most frequently prescribed drugs include Atorvastatin Calcium, Losartan Potassium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Thanh Ha, DO accept Medicare? ▼
Thanh Ha, DO appears in CMS Medicare data with 3,486 Part D claims and 324 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thanh Ha, DO's credentials? ▼
Thanh Ha, DO's NPI is 1689098162 with credentials DO. 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.