Alaa Altahan
Hematology & Oncology Physician · San Jose, CA
Alaa Altahan is a hematology & oncology physician with a practice address in San Jose, California, and NPI 1952757684, issued on May 12, 2016. Check the license (California A180251, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alaa Altahan
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- A180251 CA
60480 TN
Self-reported in NPPES; status is on the state search - Practice location
- 270 International Cir, San Jose, CA 95119
- Phone
- (408) 972-6560
- Enumerated
- May 12, 2016
- Record last updated
- Jun 29, 2026
- Medicare enrollment
- Enrolled (PECOS I20220930002628); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 270 International Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aniamma Alex, NPNurse Practitioner1407653991
- Paul Anderson, RRTRegistered Respiratory Therapist1215540869
- Stephania Bell, P.T.Orthopedic Physical Therapist1669526463
- Aaron BoselPhysical Therapist1043649189
- Katherine Casto, PTPhysical Therapist1013064708
- Cristina Celaya, MBA,OTR,L,CHTHand Occupational Therapist1396892519
Verify Alaa Altahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A180251Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% more Medicare Part D claims than the average hematology & oncology physician in 2024
992 Medicare Part D claims for 136 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Acyclovir126 claims
- Prednisone95 claims
- Dexamethasone78 claims
- Lenalidomide74 claims
- Allopurinol60 claims
- Hydroxyurea57 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Permanente Medical Group IncSan Jose, CA
- UT Regional One Physicians IncMemphis, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alaa Altahan among 1,583 hematology & oncology physician records in California
Alaa Altahan is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 87% of them.
- NPI issued2016 · 87% of these records are older, 11% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2011 · median 2003 among the 1,124 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in San Jose → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Jankikeerthika Dharmarpandi, MDSan Jose, CA 951191861055782
- Eric Imoto, D.O.San Jose, CA 951191396056438
- Maria Pilar Ivanov, MDSan Jose, CA 951191700930468
- Myron Kwong, MDSan Jose, CA 951191992881403
- Michael Lee, MDSan Jose, CA 951191629631296
- Leonid Yavorkovsky, MDSan Jose, CA 951191689750119
- Tin Hla, M.D.San Jose, CA 951161326098179
- Charlene Lee, MDSan Jose, CA 951161831488337
Common questions
What is Alaa Altahan's NPI number?
Alaa Altahan's National Provider Identifier (NPI) is 1952757684, issued on May 12, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Alaa Altahan located?
The NPPES record lists a practice address at 270 International Cir, San Jose, CA, 95119. Phone: (408) 972-6560. Providers update this record themselves, so call before visiting.
How can I verify Alaa Altahan's license?
NPPES lists California license number A180251, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Alaa Altahan prescribe under Medicare Part D?
In 2024, Alaa Altahan had 992 Medicare Part D claims for 136 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.