KARLA DANIELA GUERRERO-HALL M.D.
NPI 1124477898
Obstetrics & Gynecology in Mountain View, CA

Q: What is Karla Guerrero-hall's NPI number?

The NPI number for Karla Guerrero-hall is 1124477898. It was assigned to this individual provider in the NPPES registry on June 3, 2016.

Q: What is Karla Guerrero-hall's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Active since June 03, 2016PECOS EnrolledAccepts Medicare Assignment

2495 HOSPITAL DR STE 625, MOUNTAIN VIEW, CA 94040(650) 988-7470 Get Directions Write a Review

NPPES record last updated: September 26, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 26, 2022, Sep 2, 2020 (2 updates tracked since 2020).

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About Karla Daniela Guerrero-hall M.d. NPPES

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

KARLA DANIELA GUERRERO-HALL M.D. (NPI 1124477898) is an individual obstetrics & gynecology provider in Mountain View, California, licensed in California (A167822) and active in the NPI registry since June 2016. She is enrolled in Medicare PECOS, maintains a secondary practice location in Tracy, and is a graduate of University Of Illinois College Of Med (chi/peor/rock/chm-urb) (2016).

NPPES Registry Identity

NPI1124477898

Entity TypeIndividualFemale

Primary Taxonomy207V00000X

Provider Legal NameKARLA DANIELA GUERRERO-HALLCredential: M.D.

Location Address2495 HOSPITAL DR STE 625Mountain View, CA 94040-4158

Mailing Address2495 Hospital Dr Ste 625Mountain View, CA 94040-4158 · (650) 988-7470

Phone(650) 988-7470

Sole ProprietorYes

Medical School CMSUniversity Of Illinois College Of Med (chi/peor/rock/chm-urb)Graduated 2016

Enumeration DateJune 3, 2016

Last NPPES UpdateSeptember 26, 20222 updates tracked since enumeration

NPPES CertifiedSeptember 26, 2022

✔ NPI 1124477898 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

Licenses✔ Licensed in CA · A167822✔ Licensed in IL · 125.068624

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

2495 HOSPITAL DR STE 625, Mountain View, CA 94040

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Secondary Practice Location 1

Location 1445 W Eaton AveTracy, CA 95376-3420 · Phone (209) 835-0100

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

Karla Daniela Guerrero-hall 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 ID2163716630

PECOS Enrollment IDI20200908003114

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

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

County Of Santa Clara

2.7 mi

Clinic/Center

2500 CALIFORNIA ST
Mountain View, CA 94040

Reassigned Medicare billing, California enrollment
Also billed through NPI 1588721500 (California), NPI 1629301346 (California)
2,460 clinicians in this Medicare group

NPI 1912650672 (408) 885-5000

Lpch Medical Group Div Of Lucile

7.0 mi

Children

725 WELCH RD
Palo Alto, CA 94304

Reassigned Medicare billing, California enrollment
3,617 clinicians in this Medicare group

NPI 1417907940 (650) 498-6762

Southern Monterey County Memorial Hospital

96 mi

Critical Access

300 CANAL ST
King City, CA 93930

Reassigned Medicare billing, California enrollment
156 clinicians in this Medicare group

NPI 1114917564 (831) 385-6000

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 94040 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

$156.67 typical visit price

range $70.37 – $206.04

Typical copayment $39.16 (range $17.59 – $51.51)

Most-billed visit code 99204

Established Patient

$86.56 typical visit price

range $23.96 – $169.60

Typical copayment $21.64 (range $5.99 – $42.40)

Most-billed visit code 99213

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. KRIS YOGAM MD

Obstetrics & Gynecology

2495 HOSPITAL DR STE 625
MOUNTAIN VIEW, CA 94040

Santa Clara County (650) 497-8000

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 Karla Guerrero-hall's NPI number?

The NPI number for Karla Guerrero-hall is 1124477898. It was assigned to this individual provider in the NPPES registry on June 3, 2016.

Where is Karla Guerrero-hall located?

Karla Guerrero-hall practices at 2495 Hospital Dr Ste 625, Mountain View, CA 94040. The listed phone number is (650) 988-7470.

What is Karla Guerrero-hall's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Karla Guerrero-hall enrolled in Medicare?

Yes. Karla Guerrero-hall 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 Karla Guerrero-hall's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karla Guerrero-hall reassigns Medicare benefits to 3 organizations: County Of Santa Clara (Mountain View, CA), Lpch Medical Group Div Of Lucile (Palo Alto, CA) and Southern Monterey County Memorial Hospital (King City, 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 Karla Guerrero-hall'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 Karla Guerrero-hall was last updated on September 26, 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.