NPI registry status
Active
2026 NPPES data Hospitalist Physician NPI 1902902943 M.D.
Verify on CMS → Curtis Sather, M.D.
Hospitalist Physician in Pasadena, 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 17,950 in Hospitalist 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 · 153 beneficiaries · Hospitalist Physician avg: 940
Generic prescribing
52%
generic claims · 48% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Curtis Sather, M.D. filed 1,084 Medicare Part D claims in 2024 as a Hospitalist Physician in Pasadena, California, prescribing 52% generic.
- 1K
- Part D claims, 2024
- 52%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥75th
- 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 Curtis Sather, M.D.
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 1902902943), first enumerated 09/16/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,084 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 Curtis Sather, M.D.'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.
Compare Sather with other Hospitalist Physician providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in California
- Dr. Zina Abbas, M.D. Chula Vista, CA
- Dr. Mehrdad Abbasi, MD Rancho Mirage, CA
- Dr. Abdul Abdali, M.D. French Camp, CA
- Dr. Anwar Abdelhadi, M.D. Orange, CA
- Dr. Farid Abdelmalak, M.D. Santa Monica, CA
- Dr. Joseph Abdelmalek, M.D San Diego, CA
Other specialties in Pasadena: Behavior Technician (1,647) · Marriage & Family Therapist (977) · Rehabilitation Practitioner (912) · Student in an Organized Health Care Education/Training Program (825)
CMS NPPES provider registry desk
NPI 1902902943 · Hospitalist Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1902902943
- ENUM-LEGACY 2006
- TAX-MID 18K Hospitalist Physician
- RX-MID 1,084
- BOOK-LIGHT 1,901 in California
- PHOTO-ENUM Khalid Sabha, MD · 2006
Curtis Sather, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,084 ≥ 75th percentile 75% 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)
Curtis Sather, M.D. 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 Curtis Sather, M.D.?
Quality data not reportedPrimary specialty
Hospitalist Physician
Medicare Part D claims
1,084 15% vs specialty avg
Specialty distribution in California
How Hospitalist 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 Hospitalist 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 | 1902902943 |
|---|---|
| Specialty | Hospitalist Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 09/16/2006 |
Hospital and facility affiliations
Facilities where Curtis Sather, M.D. 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.
Healthcare Partners Affiliates Medical Group
Pasadena, 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 Curtis Sather, M.D.. To verify Curtis Sather, M.D.'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
Curtis Sather, M.D. - brand share 48.0%
Hospitalist Physician average
48% brand-name claims vs 52% generic, on 1,084 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.
1,084
Total Claims
$518K
Total Drug Cost
153
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,495.033
- Total Day Supply
- 40,050
- Brand vs Generic
- 48% brand / 52% generic
- Brand Drug Cost
- $505K
- Generic Drug Cost
- $13K
- Antibiotic Claims
- 91
Patient Demographics
- Average Patient Age
- 77.6 years
- Avg HCC Risk Score
- 2.36
- Gender Split
- 62% female / 38% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Curtis Sather, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Albuterol Sulfate …
Albuterol Sulfate Hfa
193 claims
- Breo Ellipta
Breo Ellipta
157 claims
- Trelegy Ellipta
Trelegy Ellipta
99 claims
- Prednisone
Prednisone
85 claims
- Anoro Ellipta 58
Anoro Ellipta
58 claims
- Azithromycin 56
Azithromycin
56 claims
- Montelukast Sodium 54
Montelukast Sodium
54 claims
- Fluticasone Propio… 42
Fluticasone Propionate
42 claims
| Drug | Claims |
|---|---|
| Albuterol Sulfate Hfa Albuterol Sulfate | 193 |
| Breo Ellipta Fluticasone/Vilanterol | 157 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 99 |
| Prednisone | 85 |
| Anoro Ellipta Umeclidinium Brm/Vilanterol Tr | 58 |
| Azithromycin | 56 |
| Montelukast Sodium | 54 |
| Fluticasone Propionate | 42 |
| Wixela Inhub Fluticasone Propion/Salmeterol | 37 |
| Nucala Mepolizumab | 23 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hospitalist Physician Overview
How Curtis Sather, M.D. fits within the Hospitalist Physician landscape nationally.
17,950
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
940
Avg Claims per Provider
Curtis Sather, M.D.'s 1,084 claims are above the specialty average of 940.
Nationwide Hospitalist Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Sather, 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 Hospitalist Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Sather.
One of 1,901 Hospitalist Physician providers enrolled in California, 11 are shown on this page.
Elijah Abdelmeseeh
Long Beach, CA
Dr. Homayoun Abdollahzadeh
M.D.
Rancho Mirage, CA
Merna Abdou
San Diego, CA
Dr. Rafik Abdou
M.D
Mission Hills, CA
Wajidah Abdul-Khabir
Duarte, CA
Compare Hospitalist Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Curtis Sather, M.D.'s specialty? ▼
Curtis Sather, M.D. specializes in Hospitalist Physician and practices in Pasadena, California. Credentials: M.D..
How much does Curtis Sather, M.D. prescribe under Medicare Part D? ▼
In 2024, Curtis Sather, M.D. wrote 1,084 Medicare Part D claims totaling $518K in drug costs for 153 beneficiaries.
Where is Curtis Sather, M.D. located? ▼
Curtis Sather, M.D. is located at 401 S FAIR OAKS AVE, Pasadena, CA, 91105. Phone: (626) 304-4400.
What is Curtis Sather, M.D.'s NPI number? ▼
Curtis Sather, M.D.'s National Provider Identifier (NPI) is 1902902943, issued on 09/16/2006.
Does Curtis Sather, M.D. prescribe more brand-name or generic drugs? ▼
Curtis Sather, M.D.'s prescribing is 48% brand-name and 52% generic drugs by claim count, with $505K in brand drug costs.
How many Hospitalist Physician providers are there in the US? ▼
There are 17,950 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 940 Medicare Part D claims per year.
What drugs does Curtis Sather, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Curtis Sather, M.D.'s most frequently prescribed drugs include Albuterol Sulfate Hfa, Breo Ellipta, Trelegy Ellipta. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Curtis Sather, M.D. accept Medicare? ▼
Curtis Sather, M.D. appears in CMS Medicare data with 1,084 Part D claims and 153 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Curtis Sather, M.D.'s credentials? ▼
Curtis Sather, M.D.'s NPI is 1902902943 with credentials M.D.. 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.