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NATALIA C LLARENA MD
NPI 1083005300
Obstetrics & Gynecology - Reproductive Endocrinology in Pasadena, CA

Active since February 09, 2015PECOS Enrolled
55 S LAKE AVE FL 9, PASADENA, CA 91101(818) 212-7541 Get Directions Write a Review

NPPES record last updated: May 27, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: May 27, 2025, Feb 7, 2025, Mar 18, 2019 (3 updates tracked since 2019).

About Natalia C Llarena Md NPPES

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

NATALIA C LLARENA MD (NPI 1083005300) is an individual reproductive endocrinology provider in Pasadena, California, licensed in California (A177111) and active in the NPI registry since February 2015. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1083005300
Entity TypeIndividualFemale
Primary Taxonomy207VE0102X
Provider Legal NameNATALIA C LLARENACredential: MD
Location Address55 S LAKE AVE FL 9Pasadena, CA 91101-2676
Mailing Address55 S Lake Ave Fl 9Pasadena, CA 91101-2676 · (626) 660-9718
Phone(818) 212-7541
Sole ProprietorNo
Enumeration DateFebruary 9, 2015
Last NPPES UpdateMay 27, 20253 updates tracked since enumeration
NPPES CertifiedFebruary 7, 2025
✔ NPI 1083005300 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · Reproductive EndocrinologyAllopathic & Osteopathic Physicians
Taxonomy Code207VE0102X
License✔ Licensed in CA · A177111
Definition

An obstetrician/gynecologist who is capable of managing complex problems relating to reproductive endocrinology and infertility.

55 S LAKE AVE FL 9, Pasadena, CA 91101
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Natalia C Llarena Md 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91101 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

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

DR. RICHARD JOHN PAULSON MD
Obstetrics & Gynecology (Reproductive Endocrinology)
55 S LAKE AVE FL 9
PASADENA, CA 91101
Los Angeles County (626) 440-9161

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 Natalia Llarena's NPI number?

The NPI number for Natalia Llarena is 1083005300. It was assigned to this individual provider in the NPPES registry on February 9, 2015.

Where is Natalia Llarena located?

Natalia Llarena practices at 55 S Lake Ave Fl 9, Pasadena, CA 91101. The listed phone number is (818) 212-7541.

What is Natalia Llarena's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Reproductive Endocrinology, with taxonomy code 207VE0102X.

Is Natalia Llarena enrolled in Medicare?

Yes. Natalia Llarena is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Natalia Llarena was last updated on May 27, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.