Sally Arai, MD
NPI 1881739530 · Hematology (Internal Medicine) Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Hematology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sally Arai, MD is a Hematology (Internal Medicine) Physician provider in Stanford, CA (NPI 1881739530).
Provider details
- NPI number
- 1881739530
- Entity type
- Individual
- Primary specialty
- Hematology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G87299 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
339 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 231 | $88 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 63 | $110 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 45 | $164 |
Typical Medicare-allowed amounts for these services range $88–$164 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Acyclovir | 82 | 23 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 41 | 16 |
| Atovaquone | 38 | — |
| Prednisone | 32 | — |
| Ruxolitinib Phosphatebrand: Jakafi | 31 | — |
| Posaconazole | 26 | — |
| Isavuconazonium Sulfatebrand: Cresemba | 25 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,863 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-20
- Last updated
- 2024-04-15
- Certified
- 2024-04-15
Frequently asked questions
- What is Sally Arai's NPI number?
- Sally Arai's National Provider Identifier (NPI) is 1881739530, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sally Arai's specialty?
- Sally Arai is listed in the NPPES registry with a primary specialty of Hematology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Sally Arai located?
- Sally Arai's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Sally Arai's phone number?
- The practice phone number listed in the NPPES registry for Sally Arai is (650) 723-0822.
- Does Sally Arai accept Medicare?
- Sally Arai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sally Arai's NPI active?
- Yes — Sally Arai's NPI (1881739530) is active in the NPPES registry as of the last update on 2024-04-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.