NPI registry status
Active
2026 NPPES data Public Health & General Preventive Medicine Physician NPI 1720195621 MD
Verify on CMS → Henry Thai, MD
Public Health & General Preventive Medicine Physician in Palo Alto, 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 1,799 in Public Health & General Preventive 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
1K
Medicare Part D claims · 128 beneficiaries · Public Health & General Preventive Medicine Physician avg: 944
What the federal data shows
Henry Thai, MD filed 1,340 Medicare Part D claims in 2024 as a Public Health & General Preventive Medicine Physician in Palo Alto, California.
- 1K
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥79th
- 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 Henry Thai, 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 1720195621), first enumerated 08/24/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,340 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
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Henry Thai, 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 1720195621 · Public Health & General Preventive Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1720195621
- ENUM-LEGACY 2006
- TAX-NARROW 1,799
- RX-MID 1,340
- BOOK-THIN 309 in California
- PHOTO-ENUM James Gollop · 2006
Henry Thai, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,340 ≥ 79th percentile 79% 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)
Henry Thai, 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 Henry Thai, MD?
Quality data not reportedPrimary specialty
Public Health & General Preventive Medicine Physician
Medicare Part D claims
1,340 42% vs specialty avg
Specialty distribution in California
How Public Health & General Preventive 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 Public Health & General Preventive 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).
Practice Address
Provider Details
| NPI | 1720195621 |
|---|---|
| Specialty | Public Health & General Preventive Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/24/2006 |
Hospital and facility affiliations
Facilities where Henry Thai, 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.
Sutter Bay Medical Foundation
San Mateo, 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 Henry Thai, MD. To verify Henry Thai, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
1,340
Total Claims
$88K
Total Drug Cost
128
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,962.833
- Total Day Supply
- 83,767
- Generic Drug Cost
- $29K
- Opioid Claims
- 52 (3.9% rate)
- Antibiotic Claims
- 70
Patient Demographics
- Average Patient Age
- 79.3 years
- Avg HCC Risk Score
- 0.87
- Gender Split
- 52% female / 48% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Henry Thai, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
89 claims
- Gabapentin
Gabapentin
52 claims
- Alendronate Sodium
Alendronate Sodium
48 claims
- Zolpidem Tartrate
Zolpidem Tartrate
46 claims
- Amlodipine Besylate
Amlodipine Besylate
45 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
36 claims
- Levothyroxine Sodium 34
Levothyroxine Sodium
34 claims
- Hydrocodone-Acetam… 33
Hydrocodone-Acetaminophen
33 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 89 |
| Gabapentin | 52 |
| Alendronate Sodium | 48 |
| Zolpidem Tartrate | 46 |
| Amlodipine Besylate | 45 |
| Rosuvastatin Calcium | 36 |
| Levothyroxine Sodium | 34 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 33 |
| Metformin Hcl | 33 |
| Paxlovid Nirmatrelvir/Ritonavir | 30 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Public Health & General Preventive Medicine Physician in CA →
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Public Health & General Preventive Medicine Physician Overview
How Henry Thai, MD fits within the Public Health & General Preventive Medicine Physician landscape nationally.
1,799
Public Health & General Preventive Medicine Physician Providers in US
52
States with Public Health & General Preventive Medicine Physician
944
Avg Claims per Provider
Henry Thai, MD's 1,340 claims are above the specialty average of 944.
Nationwide Public Health & General Preventive Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Thai, 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 Public Health & General Preventive Medicine Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Thai.
One of 309 Public Health & General Preventive Medicine Physician providers enrolled in California, 5 are shown here.
Frequently Asked Questions
What is Henry Thai, MD's specialty? ▼
Henry Thai, MD specializes in Public Health & General Preventive Medicine Physician and practices in Palo Alto, California. Credentials: MD.
How much does Henry Thai, MD prescribe under Medicare Part D? ▼
In 2024, Henry Thai, MD wrote 1,340 Medicare Part D claims totaling $88K in drug costs for 128 beneficiaries.
Where is Henry Thai, MD located? ▼
Henry Thai, MD is located at 795 EL CAMINO REAL, Palo Alto, CA, 94301. Phone: (650) 321-4121.
What is Henry Thai, MD's NPI number? ▼
Henry Thai, MD's National Provider Identifier (NPI) is 1720195621, issued on 08/24/2006.
Does Henry Thai, MD prescribe opioids? ▼
Yes, Henry Thai, MD had 52 opioid claims in 2024 with an opioid prescribing rate of 3.9%.
How many Public Health & General Preventive Medicine Physician providers are there in the US? ▼
There are 1,799 Public Health & General Preventive Medicine Physician providers across 52 states in the US. The average Public Health & General Preventive Medicine Physician provider writes 944 Medicare Part D claims per year.
What drugs does Henry Thai, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Henry Thai, MD's most frequently prescribed drugs include Atorvastatin Calcium, Gabapentin, Alendronate Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Henry Thai, MD accept Medicare? ▼
Henry Thai, MD appears in CMS Medicare data with 1,340 Part D claims and 128 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Henry Thai, MD's credentials? ▼
Henry Thai, MD's NPI is 1720195621 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.