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TAMER REZK MD
NPI 1457810285
Family Medicine - Addiction Medicine in Whittier, CA

Active since March 19, 2019PECOS EnrolledAccepts Medicare Assignment
12291 WASHINGTON BLVD STE 301, WHITTIER, CA 90606(562) 698-0811 Get Directions Write a Review

NPPES record last updated: October 14, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 14, 2022, Mar 19, 2019 (2 updates tracked since 2019).

About Tamer Rezk Md NPPES

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

TAMER REZK MD (NPI 1457810285) is an individual addiction medicine provider in Whittier, California, licensed in California (A178729) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS and is a graduate of Other (2006).

NPPES Registry Identity

NPI1457810285
Entity TypeIndividualMale
Primary Taxonomy207QA0401X
Provider Legal NameTAMER REZKCredential: MD
Location Address12291 WASHINGTON BLVD STE 301Whittier, CA 90606-3815
Mailing Address27385 Hyatt CtLaguna Niguel, CA 92677-3700
Phone(562) 698-0811
Sole ProprietorNo
Medical School CMSOtherGraduated 2006
Enumeration DateMarch 19, 2019
Last NPPES UpdateOctober 14, 20222 updates tracked since enumeration
NPPES CertifiedOctober 14, 2022
✔ NPI 1457810285 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily Medicine · Addiction MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207QA0401X
License✔ Licensed in CA · A178729
Definition
A family medicine physician who specializes in the diagnosis and treatment of addictions.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
12291 WASHINGTON BLVD STE 301, Whittier, CA 90606
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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

Tamer Rezk Md 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 ID4688035918
PECOS Enrollment IDI20230802001594
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

2

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

Pih Health Physicians
Same address
Gastroenterology
12291 WASHINGTON BLVD, SUITES 102 -201 -205
Whittier, CA 90606
  • Reassigned Medicare billing, California enrollment
  • 840 clinicians in this Medicare group
NPI 1376793695 (562) 698-0306
Portola Medical Services PC
31 mi
Urgent Care
29100 PORTOLA PKWY, SUITE B
Lake Forest, CA 92630
  • Reassigned Medicare billing, California enrollment
  • 10 clinicians in this Medicare group
NPI 1871962076 (844) 254-6382

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 4

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
43 services20 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
28 services25 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
27 services25 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.
18 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90606 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 2

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

SHIV KALARIA
Student in an Organized Health Care Education/Training Program
12291 WASHINGTON BLVD STE 301
WHITTIER, CA 90606
Los Angeles County (909) 610-0450
ELIZABETH J MCSHANE M D INC
Orthopaedic Surgery
12291 WASHINGTON BLVD STE 301
WHITTIER, CA 90606
Los Angeles County (562) 698-2200

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 Tamer Rezk's NPI number?

The NPI number for Tamer Rezk is 1457810285. It was assigned to this individual provider in the NPPES registry on March 19, 2019.

Where is Tamer Rezk located?

Tamer Rezk practices at 12291 Washington Blvd Ste 301, Whittier, CA 90606. The listed phone number is (562) 698-0811.

What is Tamer Rezk's specialty?

The primary specialty registered for this NPI is Family Medicine, specializing in Addiction Medicine, with taxonomy code 207QA0401X.

Is Tamer Rezk enrolled in Medicare?

Yes. Tamer Rezk 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 Tamer Rezk's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tamer Rezk reassigns Medicare benefits to 2 organizations: Pih Health Physicians (Whittier, CA) and Portola Medical Services PC (Lake Forest, 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 Tamer Rezk'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 Tamer Rezk was last updated on October 14, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.