MS. MOLLY DIAZ PA-C
NPI 1558500397
Internal Medicine - Medical Oncology in Duarte, CA

Active since February 18, 2009PECOS EnrolledAccepts Medicare Assignment
99.12/100
CMS Quality Rating
1500 DUARTE RD, DUARTE, CA 91010(626) 256-4673 Get Directions Write a Review

NPPES record last updated: December 7, 2020. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 7, 2020, Mar 17, 2018, Jul 10, 2017 (3 updates tracked since 2017).

About Ms. Molly Diaz Pa-c NPPES

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

MS. MOLLY DIAZ PA-C (NPI 1558500397) is an individual medical oncology provider in Duarte, California, licensed in California (PA20108) and active in the NPI registry since February 2009. She is enrolled in Medicare PECOS, maintains a secondary practice location in Monterey Park, and is a graduate of Other (2008).

NPPES Registry Identity

NPI1558500397
Entity TypeIndividualFemale
Primary Taxonomy207RX0202X
Provider Legal NameMS. MOLLY DIAZCredential: PA-C
Location Address1500 DUARTE RDDuarte, CA 91010-3012
Mailing AddressPo Box 512185Los Angeles, CA 90051-0185 · (626) 775-3514 · Fax (626) 218-5310
Sole ProprietorYes
Medical School CMSOtherGraduated 2008
Enumeration DateFebruary 18, 2009
Last NPPES UpdateDecember 7, 20203 updates tracked since enumeration
NPPES CertifiedDecember 7, 2020
NPI 1558500397 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 · PA20108
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 ListedPhysician AssistantTaxonomy 363A00000X · License PA20108 (CA)
Also ListedClinical Nurse Specialist · OncologyTaxonomy 364SX0200X · License PA20108 (CA)
1500 DUARTE RD, Duarte, CA 91010

Secondary Practice Location 1

Location 1941 S Atlantic Blvd, Suite 101Monterey Park, CA 91754-4722 · Phone (626) 458-8401 · Fax (626) 458-5606

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

Ms. Molly Diaz Pa-c 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 ID2567648066
PECOS Enrollment IDI20110518000283
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.

Areas of Expertise CMS Part B claims 2

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.
201 services74 patients
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.
42 services27 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91010 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

99.12/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality85.23
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 20

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

Internal Medicine (Endocrinology, Diabetes & Metabolism)
1500 DUARTE RD
DUARTE, CA 91010
Pharmacist
1500 DUARTE RD
DUARTE, CA 91010
Radiology (Diagnostic Radiology)
1500 DUARTE RD
DUARTE, CA 91010
Radiology (Radiation Oncology)
1500 DUARTE RD
DUARTE, CA 91010
Surgery (Surgical Oncology)
1500 DUARTE RD
DUARTE, CA 91010
Surgery
1500 DUARTE RD
DUARTE, CA 91010
Anesthesiology
1500 DUARTE RD
DUARTE, CA 91010
Pathology (Hematology)
1500 DUARTE RD
DUARTE, CA 91010

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 Molly Diaz's NPI number?

The NPI number for Molly Diaz is 1558500397. It was assigned to this individual provider in the NPPES registry on February 18, 2009.

Where is Molly Diaz located?

Molly Diaz practices at 1500 Duarte Rd, Duarte, CA 91010. The listed phone number is (626) 256-4673.

What is Molly Diaz's specialty?

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

Is Molly Diaz enrolled in Medicare?

Yes. Molly Diaz 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 Molly Diaz was last updated on December 7, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.