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TAMMY UNG
NPI 1699434183
Nurse Practitioner in Santa Monica, CA

Active since December 11, 2021PECOS Enrolled
2222 SANTA MONICA BLVD STE 301, SANTA MONICA, CA 90404(310) 449-0093 Get Directions Write a Review

NPPES record last updated: December 11, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Tammy Ung NPPES

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

TAMMY UNG (NPI 1699434183) is an individual nurse practitioner in Santa Monica, California, licensed in California (95019326) and active in the NPI registry since December 2021. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1699434183
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameTAMMY UNG
Location Address2222 SANTA MONICA BLVD STE 301Santa Monica, CA 90404-2307
Mailing Address8019 Lindley AveReseda, CA 91335-1418
Phone(310) 449-0093
Sole ProprietorNo
Enumeration DateDecember 11, 2021
NPPES CertifiedDecember 11, 2021
✔ NPI 1699434183 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in CA · 95019326
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedNurse Practitioner · Primary CareTaxonomy 363LP2300X · License 95019326 (CA)
2222 SANTA MONICA BLVD STE 301, Santa Monica, CA 90404
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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 (PECOS)

Tammy Ung 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 Tammy Ung reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Amin Khorsandi MD Inc
Same address
Internal Medicine
2222 SANTA MONICA BLVD, # 301
Santa Monica, CA 90404
  • Reassigned Medicare billing, California enrollment
  • 2 clinicians in this Medicare group
NPI 1841511631 (310) 449-0093

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 90404 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
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.

SEEMA TONG FNP-C
Nurse Practitioner (Family)
2222 SANTA MONICA BLVD STE 301
SANTA MONICA, CA 90404
Los Angeles County (562) 212-9322
BOB KIM FNP-C
Nurse Practitioner (Family)
2222 SANTA MONICA BLVD STE 301
SANTA MONICA, CA 90404
Los Angeles County (310) 449-0093

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 Tammy Ung's NPI number?

The NPI number for Tammy Ung is 1699434183. It was assigned to this individual provider in the NPPES registry on December 11, 2021.

Where is Tammy Ung located?

Tammy Ung practices at 2222 Santa Monica Blvd Ste 301, Santa Monica, CA 90404. The listed phone number is (310) 449-0093.

What is Tammy Ung's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Tammy Ung enrolled in Medicare?

Yes. Tammy Ung is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Tammy Ung's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Ung reassigns Medicare benefits to Amin Khorsandi MD Inc (Santa Monica, CA). The 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 Tammy Ung'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 Tammy Ung was last updated on December 11, 2021. 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.