NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1164642864 PA
Verify on CMS → Tina Chu, PA
Physician Assistant in Scottsdale, Arizona.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 150,974 in Physician Assistant, 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
707
Medicare Part D claims · 147 beneficiaries · Physician Assistant avg: 790
What the federal data shows
Tina Chu, PA filed 707 Medicare Part D claims in 2023 as a Physician Assistant in Scottsdale, Arizona.
- 707
- Part D claims, 2023
- ≥71st
- 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 Tina Chu, PA
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 1164642864), first enumerated 04/26/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 707 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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 1164642864 · Physician Assistant
NPI-10 · ENUM-MID · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1164642864
- ENUM-MID 2007
- TAX-MEGA 151K Physician Assistant
- RX-LIGHT 707
- BOOK-LIGHT 3,267 in Arizona
- PHOTO-ENUM Tiana Douglas · 2007
Tina Chu, PA's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
707 ≥ 71st percentile 71% of 1,370,886 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 · 2023
What does the federal data show about Tina Chu, PA?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
707 11% vs specialty avg
Specialty distribution in Arizona
How Physician Assistant compares to other specialties among Arizona 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 Physician Assistant. 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 | 1164642864 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA |
| Gender | Female |
| NPI Issued | 04/26/2007 |
Hospital and facility affiliations
Facilities where Tina Chu, PA 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.
Oak Street Health Physicians Group OF Arizona PLLC
Mesa, AZ
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
707
Total Claims
$88K
Total Drug Cost
147
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,431
- Total Day Supply
- 40,813
- Generic Drug Cost
- $24K
- Opioid Claims
- 12 (1.7% rate)
- Antibiotic Claims
- 25
Patient Demographics
- Average Patient Age
- 69.9 years
- Avg HCC Risk Score
- 1.61
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Tina Chu, PA prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
45 claims
- Losartan Potassium
Losartan Potassium
31 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
29 claims
- Gabapentin
Gabapentin
27 claims
- Levothyroxine Sodium
Levothyroxine Sodium
27 claims
- Lisinopril
Lisinopril
25 claims
- Metformin Hcl
Metformin Hcl
25 claims
- Varenicline Tartrate
Varenicline Tartrate
23 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 45 |
| Losartan Potassium | 31 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 29 |
| Gabapentin | 27 |
| Levothyroxine Sodium | 27 |
| Lisinopril | 25 |
| Metformin Hcl | 25 |
| Varenicline Tartrate | 23 |
| Metoprolol Succinate | 20 |
| Cyclobenzaprine Hcl | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Tina Chu, PA fits within the Physician Assistant landscape nationally.
150,974
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
Tina Chu, PA's 707 claims are below the specialty average of 790.
Nationwide Physician Assistant peers with similar MIPS or enrollment year
Two federal-record peer sets for Chu, both outside Arizona so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Physician Assistant Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Chu.
One of 3,267 Physician Assistant providers enrolled in Arizona, 5 are shown here.
Dr. Allison Abbey
PA-C
Cottonwood, AZ
Dr. Carley Abbott
PA-C
Chandler, AZ
Dr. Delmas Abbott
PA-C
Prescott, AZ
Dr. Sarah Abbott
PA
Phoenix, AZ
Dr. Kristen Abel
PA-C
Mesa, AZ
Compare Physician Assistant nationally: see state-by-state distribution →
Frequently Asked Questions
What is Tina Chu, PA's specialty? ▼
Tina Chu, PA specializes in Physician Assistant and practices in Scottsdale, Arizona. Credentials: PA.
How much does Tina Chu, PA prescribe under Medicare Part D? ▼
In 2023, Tina Chu, PA wrote 707 Medicare Part D claims totaling $88K in drug costs for 147 beneficiaries.
Where is Tina Chu, PA located? ▼
Tina Chu, PA is located at 7555 E OSBORN RD, Scottsdale, AZ, 85251. Phone: (480) 947-5454.
What is Tina Chu, PA's NPI number? ▼
Tina Chu, PA's National Provider Identifier (NPI) is 1164642864, issued on 04/26/2007.
Does Tina Chu, PA prescribe opioids? ▼
Yes, Tina Chu, PA had 12 opioid claims in 2023 with an opioid prescribing rate of 1.7%.
How many Physician Assistant providers are there in the US? ▼
There are 150,974 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does Tina Chu, PA prescribe most often? ▼
Based on 2023 Medicare Part D data, Tina Chu, PA's most frequently prescribed drugs include Atorvastatin Calcium, Losartan Potassium, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Tina Chu, PA accept Medicare? ▼
Tina Chu, PA appears in CMS Medicare data with 707 Part D claims and 147 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tina Chu, PA's credentials? ▼
Tina Chu, PA's NPI is 1164642864 with credentials PA. 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.