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OLIVE TREE NURSING CORPORATION
NPI 1194698043
Internal Medicine in Lemon Grove, CA

Active since September 26, 2025
7227 BROADWAY STE 405, LEMON GROVE, CA 91945(213) 663-8836 Get Directions Write a Review

NPPES record last updated: October 15, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Olive Tree Nursing Corporation NPPES

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

OLIVE TREE NURSING CORPORATION (NPI 1194698043) is a healthcare organization registered as an internal medicine in Lemon Grove, California and active in the NPI registry since September 2025. The organization lists Yohan Han Hwang, Ceo, as its authorized official.

NPPES Registry Identity

NPI1194698043
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameOLIVE TREE NURSING CORPORATION
Location Address7227 BROADWAY STE 405Lemon Grove, CA 91945-1505
Mailing Address1208 Corte MendiChula Vista, CA 91913-3547 · (213) 663-8836
Phone(213) 663-8836
Organization SubpartNo
Authorized OfficialYohan Han HwangCeo · (213) 663-8836
Enumeration DateSeptember 26, 2025
Last NPPES UpdateOctober 15, 2025
NPPES CertifiedOctober 15, 2025
✔ NPI 1194698043 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
7227 BROADWAY STE 405, Lemon Grove, CA 91945
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Olive Tree Nursing Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

7

Medicare enrollment records show 7 clinicians reassign Medicare billing to Olive Tree Nursing Corporation, which bills Medicare for the services they deliver. Of these, 3 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (7)

Cristina Tobon-Chung, FNP
Nurse Practitioner
NPI 1053735019
4579 MAPLE AVE SUITE 1
La Mesa, CA 91941
(619) 410-9554
✔ PECOS✔ Accepts Medicare1.5 mi
Mariz Cayetano
Nurse Practitioner
NPI 1922972660
6832 51ST ST
San Diego, CA 92120
(858) 349-0553
✔ PECOS✔ Accepts Medicare4.5 mi
Andres Smith, M.D.
Emergency Medicine
NPI 1548270200
751 MEDICAL CENTER CT
Chula Vista, CA 91911
(619) 482-5825
✔ PECOS8.6 mi
Yohan Han Hwang
Nurse Practitioner
NPI 1609515642
1208 CORTE MENDI
Chula Vista, CA 91913
(213) 663-8836
✔ PECOS✔ Accepts Medicare10 mi
Grace Lee, FNP-C
Nurse Practitioner
NPI 1386112597
16773 BERNARDO CENTER DR
San Diego, CA 92128
(858) 451-2630
✔ PECOS✔ Accepts Medicare19 mi
John Adeiza, NP
Nurse Practitioner
NPI 1174918585
106 S GRAPE ST STE 4
Escondido, CA 92025
(888) 628-6688
✔ PECOS✔ Accepts Medicare26 mi
Wilian Grijalva
Nurse Practitioner
NPI 1831872357
5459 MERIDIAN PL
Bonsall, CA 92003
(949) 547-0486
✔ PECOS✔ Accepts Medicare38 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Olive Tree Nursing Corporation's NPI number?

The NPI number for Olive Tree Nursing Corporation is 1194698043. It was assigned to this organization in the NPPES registry on September 26, 2025.

Where is Olive Tree Nursing Corporation located?

Olive Tree Nursing Corporation is located at 7227 Broadway Ste 405, Lemon Grove, CA 91945. The listed phone number is (213) 663-8836.

What is Olive Tree Nursing Corporation's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Olive Tree Nursing Corporation enrolled in Medicare?

Yes. Olive Tree Nursing Corporation is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Olive Tree Nursing Corporation?

According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians in 2 Medicare specialties reassign their Medicare billing to Olive Tree Nursing Corporation. A 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 the clinician's services. The largest specialties are Nurse Practitioner (6) and Emergency Medicine (1). Of these, 3 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Olive Tree Nursing Corporation was last updated on October 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.