DR. PHILIP L CHATHAM M.D.
NPI 1740279264
Internal Medicine - Medical Oncology in San Gabriel, CA

Q: What is Philip Chatham's NPI number?

The NPI number for Philip Chatham is 1740279264. It was assigned to this individual provider in the NPPES registry on October 18, 2005.

Q: What is Philip Chatham'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 Philip Chatham was last updated on May 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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 18, 2005PECOS Enrolled

207 S SANTA ANITA ST STE P05, SAN GABRIEL, CA 91776(626) 652-7433 Get Directions Write a Review

NPPES record last updated: May 2, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Mar 1, 2021, Nov 20, 2020, Mar 17, 2018 (3 updates tracked since 2018).

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About Dr. Philip L Chatham M.d. NPPES

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

DR. PHILIP L CHATHAM M.D. (NPI 1740279264) is an individual medical oncology provider in San Gabriel, California, licensed in California (A32433) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1740279264

Entity TypeIndividualMale

Primary Taxonomy207RX0202X

Provider Legal NameDR. PHILIP L CHATHAMCredential: M.D.

Location Address207 S SANTA ANITA ST STE P05San Gabriel, CA 91776-1159

Mailing Address19742 Trammell LnChatsworth, CA 91311-1906 · (818) 470-6809

Phone(626) 652-7433

Sole ProprietorNo

Enumeration DateOctober 18, 2005

Last NPPES UpdateMay 2, 20253 updates tracked since enumeration

NPPES CertifiedMay 2, 2025

✔ NPI 1740279264 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 · A32433

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 A32433 (CA)

Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License A32433 (CA)

207 S SANTA ANITA ST STE P05, San Gabriel, CA 91776

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Secondary Practice Locations 2

Location 116801 Devonshire StGranada Hills, CA 91344-7405 · Phone (818) 366-1878 · Fax (818) 360-7850

Location 215031 Rinaldi St Ste 150Mission Hills, CA 91345-1207 · Phone (818) 660-4700

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Philip L Chatham M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Philip Chatham reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

City Of Hope Medical Foundation

8.0 mi

Hematology & Oncology

1500 DUARTE RD
Duarte, CA 91010

Reassigned Medicare billing, California enrollment
1,335 clinicians in this Medicare group

NPI 1871886366 (626) 256-4673

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91776 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

$187.60 typical visit price

range $62.96 – $187.60

Typical copayment $46.90 (range $15.74 – $46.90)

Most-billed visit code 99205

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.

Other Providers at the Same Location NPPES 7

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

EDWIN NG

Physician Assistant