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TANZILA SHAKIR RAZZAKI M.D.
NPI 1619396769
Internal Medicine - Endocrinology, Diabetes & Metabolism in Newport Beach, CA

Active since April 15, 2014PECOS EnrolledAccepts Medicare Assignment
500 SUPERIOR AVE STE 100, NEWPORT BEACH, CA 92663(949) 764-8379(714) 541-3200 Get Directions Write a Review

NPPES record last updated: August 22, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 17, 2024, Jun 19, 2024, Feb 14, 2022 and 1 more (4 updates tracked since 2021).

About Tanzila Shakir Razzaki M.d. NPPES

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

TANZILA SHAKIR RAZZAKI M.D. (NPI 1619396769) is an individual endocrinology, diabetes & metabolism provider in Newport Beach, California, licensed in California (A183041) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS, maintains a secondary practice location in Rancho Mirage, and is a graduate of Other (2010).

NPPES Registry Identity

NPI1619396769
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameTANZILA SHAKIR RAZZAKICredential: M.D.
Location Address500 SUPERIOR AVE STE 100Newport Beach, CA 92663-3660
Mailing Address500 Superior Ave Ste 100Newport Beach, CA 92663-3660 · (949) 764-8379
Phone(949) 764-8379
Fax(714) 541-3200
Sole ProprietorNo
Medical School CMSOtherGraduated 2010
Enumeration DateApril 15, 2014
Last NPPES UpdateAugust 22, 20254 updates tracked since enumeration
NPPES CertifiedAugust 22, 2025
✔ NPI 1619396769 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · A183041
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
500 SUPERIOR AVE STE 100, Newport Beach, CA 92663
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Secondary Practice Location 1

Location 139000 Bob Hope DrRancho Mirage, CA 92270-3221 · Phone (760) 321-5257 · Fax (760) 773-1631

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

Tanzila Shakir Razzaki 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 ID5597150193
PECOS Enrollment IDI20230106002335
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

3

Medicare enrollment records show Tanzila Razzaki reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Tanzila Razzaki PC
Same address
Endocrinology, Diabetes & Metabolism
500 SUPERIOR AVE STE 100
Newport Beach, CA 92663
  • Reassigned Medicare billing, California enrollment
NPI 1457127540 (949) 764-8379
David Ahn, M.D., Inc
0.1 mi
Endocrinology, Diabetes & Metabolism
520 SUPERIOR AVE STE 150
Newport Beach, CA 92663
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: David Ahn MD Inc
  • 5 clinicians in this Medicare group
NPI 1114501848 (949) 764-7366
Eisenhower Medical Center
81 mi
General Acute Care Hospital
1555 S PALM CANYON DR BLDG C
Palm Springs, CA 92264
  • Reassigned Medicare billing, California enrollment
  • 595 clinicians in this Medicare group
NPI 1598008658 (760) 969-7770

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 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 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.
249 services90 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.
68 services68 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92663 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.

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.

EUNSEO KIM PA-C
Physician Assistant
500 SUPERIOR AVE STE 100
NEWPORT BEACH, CA 92663
Orange County (949) 764-8379
RAVI JERAM KANKOTIA M.D.
Internal Medicine (Gastroenterology)
500 SUPERIOR AVE STE 100
NEWPORT BEACH, CA 92663
Orange County (949) 764-5760
BRIAN T LEE MD
Internal Medicine (Transplant Hepatology)
500 SUPERIOR AVE STE 100
NEWPORT BEACH, CA 92663
Orange County (949) 764-5793
Dr. JEFFREY IAN BARKE M.D.
Family Medicine
500 SUPERIOR AVE STE 100
NEWPORT BEACH, CA 92663
Orange County (949) 706-3300
TANZILA RAZZAKI PC
Internal Medicine (Endocrinology, Diabetes & Metabolism)
500 SUPERIOR AVE STE 100
NEWPORT BEACH, CA 92663
Orange County (949) 764-8379
MONIQUE MAREE QUINT FNP-C
Nurse Practitioner (Family)
500 SUPERIOR AVE STE 100
NEWPORT BEACH, CA 92663
Orange County (949) 764-5793
DR. KATHERINE SHERMAN BLEVINS M.D., PH.D.
Surgery
500 SUPERIOR AVE STE 100
NEWPORT BEACH, CA 92663
Orange County (949) 764-5350
CAMBRIA ANNE JUDD M.D.
Family Medicine (Sports Medicine)
500 SUPERIOR AVE STE 100
NEWPORT BEACH, CA 92663
Orange County (949) 706-3300

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 Tanzila Razzaki's NPI number?

The NPI number for Tanzila Razzaki is 1619396769. It was assigned to this individual provider in the NPPES registry on April 15, 2014.

Where is Tanzila Razzaki located?

Tanzila Razzaki practices at 500 Superior Ave Ste 100, Newport Beach, CA 92663. The listed phone number is (949) 764-8379.

What is Tanzila Razzaki's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Tanzila Razzaki enrolled in Medicare?

Yes. Tanzila Razzaki 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.

Which organizations bill Medicare for Tanzila Razzaki's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tanzila Razzaki reassigns Medicare benefits to 3 organizations: Tanzila Razzaki PC (Newport Beach, CA), David Ahn, M.D., Inc (Newport Beach, CA) and Eisenhower Medical Center (Palm Springs, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Tanzila Razzaki's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Tanzila Razzaki was last updated on August 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.