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PROHEALTH PARTNERS A MEDICAL GROUP INC
NPI 1831573781
Internal Medicine in Los Alamitos, CA

Active since July 09, 2015CLIA 05D2136740 · Waiver
5122 KATELLA AVE, SUITE 308, LOS ALAMITOS, CA 90720(562) 594-8555 Get Directions Write a Review

NPPES record last updated: September 4, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Prohealth Partners A Medical Group Inc NPPES

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

PROHEALTH PARTNERS A MEDICAL GROUP INC (NPI 1831573781) is a healthcare organization registered as an internal medicine in Los Alamitos, California and active in the NPI registry since July 2015. The organization holds a CLIA Waiver certificate valid through September 13, 2027 and lists Peter Ferrera, President, as its authorized official.

NPPES Registry Identity

NPI1831573781
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NamePROHEALTH PARTNERS A MEDICAL GROUP INC
Location Address5122 KATELLA AVE, SUITE 308Los Alamitos, CA 90720-2826
Mailing Address5122 Katella Ave Ste 308Los Alamitos, CA 90720-2898 · (562) 594-8555
Phone(562) 594-8555
Organization SubpartNo
Authorized OfficialPeter FerreraPresident · (562) 299-5200
Enumeration DateJuly 9, 2015
Last NPPES UpdateSeptember 4, 2025
NPPES CertifiedSeptember 4, 2025
✔ NPI 1831573781 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.
5122 KATELLA AVE, Los Alamitos, CA 90720
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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)

Prohealth Partners A Medical Group Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

278

Medicare enrollment records show 278 clinicians reassign Medicare billing to Prohealth Partners A Medical Group Inc, which bills Medicare for the services they deliver. Of these, 146 practice within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 38

Nurse Practitioner55
Internal Medicine50
Family Practice38
Nephrology18
Cardiovascular Disease (Cardiology)17
Obstetrics/Gynecology10
Gastroenterology7
Hospitalist6
30 other specialties77

Nearest to this location (20)

See all 278
Daniel Kim
Hospitalist
NPI 1174801344
10541 CALLE LEE STE 117
Los Alamitos, CA 90720
(714) 794-2777
✔ PECOS✔ Accepts Medicare1.0 mi
Sheida Kashani, D.O.
Internal Medicine
NPI 1285752436
10941 BLOOMFIELD ST STE A
Los Alamitos, CA 90720
(562) 716-7466
✔ PECOS✔ Accepts Medicare1.2 mi
Ruby Elaine Calalo, AGACNP-BC
Nurse Practitioner
NPI 1043915440
3851 KATELLA AVE STE 315
Los Alamitos, CA 90720
(562) 626-8016
✔ PECOS✔ Accepts Medicare1.2 mi
Mary Seiersen, RDE
Registered Dietitian or Nutrition Professional
NPI 1538282983
3851 KATELLA AVE STE 275
Los Alamitos, CA 90720
(562) 296-5528
1.2 mi
Veronica Zoleta, NP
Nurse Practitioner
NPI 1992446868
3851 KATELLA AVE STE 275
Los Alamitos, CA 90720
(562) 296-5528
✔ PECOS1.2 mi
Thien-Kim Co, DO
Nephrology
NPI 1033732953
3851 KATELLA AVE STE 325
Los Alamitos, CA 90720
(562) 286-6466
✔ PECOS✔ Accepts Medicare1.2 mi
Petra Wong, MD
Internal Medicine
NPI 1578585915
3801 KATELLA AVE STE 300
Los Alamitos, CA 90720
(562) 430-6472
✔ PECOS✔ Accepts Medicare1.3 mi
Michele Nelson-Chung, LMFT
Marriage and Family Therapist
NPI 1548704612
3801 KATELLA AVE STE 330
Los Alamitos, CA 90720
(562) 740-5303
✔ PECOS✔ Accepts Medicare1.3 mi
Jennifer Kim Loomis, D.O.
Family Practice
NPI 1215136940
3801 KATELLA AVE 222
Los Alamitos, CA 90720
(562) 296-5528
✔ PECOS✔ Accepts Medicare1.3 mi
Duke Ahn, M.D.
Orthopedic Surgery
NPI 1942318373
3700 KATELLA AVE STE C
Los Alamitos, CA 90720
(562) 583-2250
✔ PECOS✔ Accepts Medicare1.4 mi
James Sheppard, DO
Family Practice
NPI 1255686044
3700 KATELLA AVE STE D
Los Alamitos, CA 90720
(562) 855-2700
✔ PECOS✔ Accepts Medicare1.4 mi
Rebekah Neal, M.D.
Rheumatology
NPI 1215165667
10861 CHERRY ST SUITE 104
Los Alamitos, CA 90720
(562) 794-9801
✔ PECOS✔ Accepts Medicare1.5 mi
Rebecca Schwartz, MD
Obstetrics/Gynecology
NPI 1619931599
10861 CHERRY ST STE 105
Los Alamitos, CA 90720
(562) 595-1961
✔ PECOS✔ Accepts Medicare1.5 mi
Meenakshi Verma, M.D
Nephrology
NPI 1942463427
10861 CHERRY ST STE 104
Los Alamitos, CA 90720
(562) 446-0580
✔ PECOS✔ Accepts Medicare1.5 mi
Karen Koe, MD
Obstetrics/Gynecology
NPI 1780648709
10861 CHERRY ST STE 308
Los Alamitos, CA 90720
(562) 595-1961
✔ PECOS✔ Accepts Medicare1.5 mi
Andrew Hanna, D.O.
Physical Medicine and Rehabilitation
NPI 1972042620
3662 KATELLA AVE STE 117
Los Alamitos, CA 90720
(310) 507-7984
✔ PECOS✔ Accepts Medicare1.5 mi
George Espinoza
Physical Therapist in Private Practice
NPI 1659451011
4481 ELDER AVE
Seal Beach, CA 90740
(562) 212-9976
✔ Accepts Medicare1.8 mi
Nancy Godfrey, M.D.
Rheumatology
NPI 1790777449
6226 E SPRING ST 275
Long Beach, CA 90815
(562) 496-0546
✔ PECOS✔ Accepts Medicare3.9 mi
Adriana Westby Trent
Clinical Psychologist
NPI 1518081942
3325 PALO VERDE AVE STE 201
Long Beach, CA 90808
(562) 542-3600
✔ PECOS✔ Accepts Medicare3.9 mi
Seper Dezfoli, M.D.
Gastroenterology
NPI 1104159383
3816 WOODRUFF AVE STE 411
Long Beach, CA 90808
(562) 485-5550
✔ PECOS✔ Accepts Medicare4.6 mi
See all 278 clinicians

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D2136740

Prohealth Partners A Medical Group Inc · Los Alamitos, CA
Active · expires Sep 13, 2027
CLIA Number05D2136740
Laboratory TypePhysician Office
Certificate Effective DateSeptember 14, 2025
Certificate Expiration DateSeptember 13, 2027
Laboratory DirectorArchna Chaudhary MD
Laboratory Phone(562) 594-8555
Laboratory LocationProhealth Partners A Medical Group Inc5122 Katella Avenue Ste 308, Los Alamitos, CA 90720
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Prohealth Partners A Medical Group Inc's NPI number?

The NPI number for Prohealth Partners A Medical Group Inc is 1831573781. It was assigned to this organization in the NPPES registry on July 9, 2015.

Where is Prohealth Partners A Medical Group Inc located?

Prohealth Partners A Medical Group Inc is located at 5122 Katella Ave Suite 308, Los Alamitos, CA 90720. The listed phone number is (562) 594-8555.

What is Prohealth Partners A Medical Group Inc's specialty?

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

Is Prohealth Partners A Medical Group Inc enrolled in Medicare?

Yes. Prohealth Partners A Medical Group Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Prohealth Partners A Medical Group Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 278 clinicians in 38 Medicare specialties reassign their Medicare billing to Prohealth Partners A Medical Group Inc. 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 (55), Internal Medicine (50) and Family Practice (38). Of these, 146 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Prohealth Partners A Medical Group Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D2136740) is associated with this NPI, valid through September 13, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Prohealth Partners A Medical Group Inc was last updated on September 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.