ALEXANDER DARWIN VUONG PHAM M.D.
NPI 1487807111
Internal Medicine - Medical Oncology in San Jose, CA

Q: What is Alexander Pham's NPI number?

The NPI number for Alexander Pham is 1487807111. It was assigned to this individual provider in the NPPES registry on October 26, 2008.

Q: What is Alexander Pham's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Q: When was this NPI record last updated?

The NPPES record for Alexander Pham was last updated on April 16, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since October 26, 2008PECOS EnrolledAccepts Medicare Assignment

2589 SAMARITAN DR, SAN JOSE, CA 95124(408) 426-4900 Get Directions Write a Review

NPPES record last updated: April 16, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 16, 2024, Oct 31, 2023, Jun 25, 2018 and 2 more (5 updates tracked since 2016).

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About Alexander Darwin Vuong Pham M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALEXANDER DARWIN VUONG PHAM M.D. (NPI 1487807111) is an individual medical oncology provider in San Jose, California, licensed in California (A112936) and active in the NPI registry since October 2008. He is enrolled in Medicare PECOS, maintains a secondary practice location in Stanford, and is a graduate of Other (2008).

NPPES Registry Identity

NPI1487807111

Entity TypeIndividualMale

Primary Taxonomy207RX0202X

Provider Legal NameALEXANDER DARWIN VUONG PHAMCredential: M.D.

Location Address2589 SAMARITAN DRSan Jose, CA 95124-4102

Mailing Address2589 Samaritan DrSan Jose, CA 95124-4102 · (408) 426-4900

Phone(408) 426-4900

Sole ProprietorNo

Medical School CMSOtherGraduated 2008

Enumeration DateOctober 26, 2008

Last NPPES UpdateApril 16, 20245 updates tracked since enumeration

NPPES CertifiedApril 16, 2024

✔ NPI 1487807111 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RX0202X

License✔ Licensed in CA · A112936

Definition

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

Also ListedInternal MedicineTaxonomy 207R00000X · License A112936 (CA)

Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License A112936 (CA)

2589 SAMARITAN DR, San Jose, CA 95124

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Secondary Practice Location 1

Location 1300 Pasteur DrStanford, CA 94305-2200 · Phone (650) 723-4000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Alexander Darwin Vuong Pham M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5698944544

PECOS Enrollment IDI20110809000890

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Alexander Pham reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Stanford Health Care

18 mi

General Acute Care Hospital

300 PASTEUR DRIVE
Stanford, CA 94305

Reassigned Medicare billing, California enrollment
4,258 clinicians in this Medicare group

NPI 1437292927 (650) 723-4000

University Healthcare Alliance

21 mi

Internal Medicine

7999 GATEWAY BLVD STE 200
Newark, CA 94560

Reassigned Medicare billing, California enrollment
435 clinicians in this Medicare group

NPI 1760531198 (888) 924-1036

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

708 services253 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

276 services192 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

110 services45 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

76 services76 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

15 services12 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

12 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95124 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$206.04 typical visit price

range $70.37 – $206.04

Typical copayment $51.51 (range $17.59 – $51.51)

Most-billed visit code 99205

Established Patient

$121.77 typical visit price

range $23.96 – $169.60

Typical copayment $30.44 (range $5.99 – $42.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 10

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GEORGE LABBAN M.D.

Internal Medicine (Medical Oncology)