CRISTINA HERNANDEZ O'DAY MD
NPI 1275738940
Obstetrics & Gynecology in Anaheim, CA

Q: What is Cristina O'day's NPI number?

The NPI number for Cristina O'day is 1275738940. It was assigned to this individual provider in the NPPES registry on June 20, 2007. The provider is also known as Cristina Hernandez MD.

Q: What is Cristina O'day's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Cristina O'day was last updated on November 9, 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.

Active since June 20, 2007PECOS EnrolledAccepts Medicare Assignment

1211 W LA PALMA AVE, 609, ANAHEIM, CA 92801(714) 535-7245(714) 535-1955 Get Directions Write a Review

NPPES record last updated: November 9, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Nov 9, 2021, Oct 26, 2020, Jun 27, 2017 (3 updates tracked since 2017).

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About Cristina Hernandez O'day Md NPPES

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

CRISTINA HERNANDEZ O'DAY MD (NPI 1275738940) is an individual obstetrics & gynecology provider in Anaheim, California, licensed in California (A105959) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS and is a graduate of University Of California, Irvine, California College Of Medicine (2007).

NPPES Registry Identity

NPI1275738940

Entity TypeIndividualFemale

Primary Taxonomy207V00000X

Provider Legal NameCRISTINA HERNANDEZ O'DAYCredential: MD

Location Address1211 W LA PALMA AVE, 609Anaheim, CA 92801-2815

Mailing Address1211 W La Palma Ave, 609Anaheim, CA 92801-2815 · (714) 535-7245 · Fax (714) 535-1955

Phone(714) 535-7245

Fax(714) 535-1955

Sole ProprietorYes

Medical School CMSUniversity Of California, Irvine, California College Of MedicineGraduated 2007

Enumeration DateJune 20, 2007

Last NPPES UpdateNovember 9, 20213 updates tracked since enumeration

NPPES CertifiedNovember 9, 2021

✔ NPI 1275738940 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in CA · A105959

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.

1211 W LA PALMA AVE, Anaheim, CA 92801

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Other Names 1

Former Name (1)Cristina Hernandez Md

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Cristina Hernandez O'day 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 ID2062660277

PECOS Enrollment IDI20121012000039

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.

Areas of Expertise CMS Part B claims

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 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.

13 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92801 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

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

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 20

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

ALEEM A SYED MD

Internal Medicine (Endocrinology, Diabetes & Metabolism)

1211 W LA PALMA AVE, SUITE 702
ANAHEIM, CA 92801

Orange County (714) 533-0300

DR. ASHLEY E. MIRES M.D.

Hospitalist

1211 W LA PALMA AVE, #207
ANAHEIM, CA 92801

Orange County (714) 772-8282

DR. MICHAEL P BLUM D.D.S.

Dentist (Oral and Maxillofacial Surgery)

1211 W LA PALMA AVE, SUITE 604
ANAHEIM, CA 92801

Orange County (714) 772-2200

ZOHREH SHAKERI PA-C

Physician Assistant

1211 W LA PALMA AVE, SUITE 207
ANAHEIM, CA 92801

Orange County (714) 772-8282

DR. ARCHANA C SHENDE M D

Internal Medicine

1211 W LA PALMA AVE, SUITE 309
ANAHEIM, CA 92801

Orange County (714) 999-1050

ARCHANA SHENDE M D INC

Internal Medicine

1211 W LA PALMA AVE, 309
ANAHEIM, CA 92801

Orange County (714) 999-1050

MARK P MILLER M.D.

Internal Medicine (Interventional Cardiology)

1211 W LA PALMA AVE, SUITE 101
ANAHEIM, CA 92801

Orange County (714) 635-9680

AGMG ENDOSCOPY CENTER A GENERAL PARTNERSHIP

Clinic/Center (Ambulatory Surgical)

1211 W LA PALMA AVE, STE 301
ANAHEIM, CA 92801

Orange County (714) 284-0737

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 Cristina O'day's NPI number?

The NPI number for Cristina O'day is 1275738940. It was assigned to this individual provider in the NPPES registry on June 20, 2007. The provider is also known as Cristina Hernandez MD.

Where is Cristina O'day located?

Cristina O'day practices at 1211 W La Palma Ave 609, Anaheim, CA 92801. The listed phone number is (714) 535-7245.

What is Cristina O'day's specialty?

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

Is Cristina O'day enrolled in Medicare?

Yes. Cristina O'day 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.

When was this NPI record last updated?

The NPPES record for Cristina O'day was last updated on November 9, 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.