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DR. DEREK T PHAN M.D.
NPI 1073729588
Internal Medicine in Westminster, CA

Active since May 14, 2007PECOS EnrolledAccepts Medicare Assignment
9191 BOLSA AVE STE 205, WESTMINSTER, CA 92683(714) 891-7035 Get Directions Write a Review

NPPES record last updated: October 7, 2009. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Derek T Phan M.d. NPPES

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

DR. DEREK T PHAN M.D. (NPI 1073729588) is an individual internal medicine provider in Westminster, California, licensed in California (A99908) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS and is a graduate of New York Medical College (2005).

NPPES Registry Identity

NPI1073729588
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. DEREK T PHANCredential: M.D.
Location Address9191 BOLSA AVE STE 205Westminster, CA 92683-5561
Mailing Address9191 Bolsa Ave Ste 205Westminster, CA 92683-5561 · (714) 891-7035
Phone(714) 891-7035
Sole ProprietorYes
Medical School CMSNew York Medical CollegeGraduated 2005
Enumeration DateMay 14, 2007
Last NPPES UpdateOctober 7, 2009
✔ NPI 1073729588 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A99908
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
9191 BOLSA AVE STE 205, Westminster, CA 92683
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Derek T Phan 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 ID1951451418
PECOS Enrollment IDI20090604000347
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92683 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Derek Phan's NPI number?

The NPI number for Derek Phan is 1073729588. It was assigned to this individual provider in the NPPES registry on May 14, 2007.

Where is Derek Phan located?

Derek Phan practices at 9191 Bolsa Ave Ste 205, Westminster, CA 92683. The listed phone number is (714) 891-7035.

What is Derek Phan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Derek Phan enrolled in Medicare?

Yes. Derek Phan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Derek Phan was last updated on October 7, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.