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PROHEALTH PARTNERS A MEDICAL GROUP
NPI 1154862241
Surgery in Los Alamitos, CA

Active since March 09, 2017CLIA 05D2033297 · Waiver
3742 KATELLA AVE STE 303, LOS ALAMITOS, CA 90720(562) 296-8050 Get Directions Write a Review

NPPES record last updated: February 1, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 1, 2023, Aug 30, 2017, Aug 23, 2017 (3 updates tracked since 2017).

About Prohealth Partners A Medical Group NPPES

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

PROHEALTH PARTNERS A MEDICAL GROUP (NPI 1154862241) is a healthcare organization registered as a surgery in Los Alamitos, California and active in the NPI registry since March 2017. The organization holds a CLIA Waiver certificate valid through November 28, 2027 and lists Barry S Allswang, President, as its authorized official.

NPPES Registry Identity

NPI1154862241
Entity TypeOrganization
Primary Taxonomy208600000X
Legal Business NamePROHEALTH PARTNERS A MEDICAL GROUP
Location Address3742 KATELLA AVE STE 303Los Alamitos, CA 90720-3172
Mailing Address3742 Katella Ave Ste 303Los Alamitos, CA 90720-3172
Phone(562) 296-8050
Organization SubpartNo
Authorized OfficialBarry S AllswangPresident · (562) 299-5200
Enumeration DateMarch 9, 2017
Last NPPES UpdateFebruary 1, 20233 updates tracked since enumeration
NPPES CertifiedFebruary 1, 2023
✔ NPI 1154862241 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Also ListedSurgery · Trauma SurgeryTaxonomy 2086S0127X
3742 KATELLA AVE STE 303, 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 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, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 141 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
Duke Ahn, M.D.
Orthopedic Surgery
NPI 1942318373
3700 KATELLA AVE STE C
Los Alamitos, CA 90720
(562) 583-2250
✔ PECOS✔ Accepts MedicareSame address
James Sheppard, DO
Family Practice
NPI 1255686044
3700 KATELLA AVE STE D
Los Alamitos, CA 90720
(562) 855-2700
✔ PECOS✔ Accepts MedicareSame address
Andrew Hanna, D.O.
Physical Medicine and Rehabilitation
NPI 1972042620
3662 KATELLA AVE STE 117
Los Alamitos, CA 90720
(310) 507-7984
✔ PECOS✔ Accepts Medicare0.1 mi
Winston Chung, MD
Internal Medicine
NPI 1851322085
3801 KATELLA AVE SUITE 330
Los Alamitos, CA 90720
(562) 594-9546
✔ PECOS✔ Accepts Medicare0.1 mi
Gerald Cohen, MD
Internal Medicine
NPI 1306877253
3801 KATELLA AVE SUITE 330
Los Alamitos, CA 90720
(562) 594-9546
✔ PECOS✔ Accepts Medicare0.1 mi
Jennifer Kim Loomis, D.O.
Family Practice
NPI 1215136940
3801 KATELLA AVE 222
Los Alamitos, CA 90720
(562) 296-5528
✔ PECOS✔ Accepts Medicare0.1 mi
Sandra Kim, FNP, RN, PHN
Nurse Practitioner
NPI 1306355698
3801 KATELLA AVE STE 330
Los Alamitos, CA 90720
(562) 594-9546
✔ PECOS✔ Accepts Medicare0.1 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 Medicare0.1 mi
Ana Maria De Jesus
Nurse Practitioner
NPI 1801497706
3801 KATELLA AVE STE 3303801
Los Alamitos, CA 90720
(949) 610-4919
✔ PECOS✔ Accepts Medicare0.1 mi
Petra Wong, MD
Internal Medicine
NPI 1578585915
3801 KATELLA AVE STE 300
Los Alamitos, CA 90720
(562) 430-6472
✔ PECOS✔ Accepts Medicare0.1 mi
Gloria Hu, M.D.
Family Practice
NPI 1396062279
10861 CHERRY ST STE 105
Los Alamitos, CA 90720
(562) 259-8881
✔ PECOS✔ Accepts Medicare0.1 mi
Cindy Jen, M.D.
Family Practice
NPI 1104123199
10861 CHERRY ST STE 105
Los Alamitos, CA 90720
(562) 259-8881
✔ PECOS✔ Accepts Medicare0.1 mi
Karen Koe, MD
Obstetrics/Gynecology
NPI 1780648709
10861 CHERRY ST STE 308
Los Alamitos, CA 90720
(562) 595-1961
✔ PECOS✔ Accepts Medicare0.1 mi
Michelle Reddy, MD
Obstetrics/Gynecology
NPI 1063477891
10861 CHERRY ST STE 308
Los Alamitos, CA 90720
(562) 595-1961
✔ PECOS✔ Accepts Medicare0.1 mi
Rebecca Schwartz, MD
Obstetrics/Gynecology
NPI 1619931599
10861 CHERRY ST STE 105
Los Alamitos, CA 90720
(562) 595-1961
✔ PECOS✔ Accepts Medicare0.1 mi
Rebekah Neal, M.D.
Rheumatology
NPI 1215165667
10861 CHERRY ST SUITE 104
Los Alamitos, CA 90720
(562) 794-9801
✔ PECOS✔ Accepts Medicare0.1 mi
Meenakshi Verma, M.D
Nephrology
NPI 1942463427
10861 CHERRY ST STE 104
Los Alamitos, CA 90720
(562) 446-0580
✔ PECOS✔ Accepts Medicare0.1 mi
Mary Seiersen, RDE
Registered Dietitian or Nutrition Professional
NPI 1538282983
3851 KATELLA AVE STE 275
Los Alamitos, CA 90720
(562) 296-5528
0.2 mi
Thien-Kim Co, DO
Nephrology
NPI 1033732953
3851 KATELLA AVE STE 325
Los Alamitos, CA 90720
(562) 286-6466
✔ PECOS✔ Accepts Medicare0.2 mi
Daniel Kim
Hospitalist
NPI 1174801344
10541 CALLE LEE STE 117
Los Alamitos, CA 90720
(714) 794-2777
✔ PECOS✔ Accepts Medicare0.7 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 05D2033297

Prohealth Partners, A Medical Group, Inc · Los Alamitos, CA
Active · expires Nov 28, 2027
CLIA Number05D2033297
Laboratory TypePhysician Office
Certificate Effective DateNovember 29, 2025
Certificate Expiration DateNovember 28, 2027
Laboratory DirectorPetra A. Wong
Laboratory Phone(562) 596-1242
Laboratory LocationProhealth Partners, A Medical Group, Inc3801 Katella Ave Ste 300, Los Alamitos, CA 90720
CLIA data matches this NPI record on: Name
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's NPI number?

The NPI number for Prohealth Partners A Medical Group is 1154862241. It was assigned to this organization in the NPPES registry on March 9, 2017.

Where is Prohealth Partners A Medical Group located?

Prohealth Partners A Medical Group is located at 3742 Katella Ave Ste 303, Los Alamitos, CA 90720. The listed phone number is (562) 296-8050.

What is Prohealth Partners A Medical Group's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Prohealth Partners A Medical Group enrolled in Medicare?

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

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

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. 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, 2 practice at this address and 141 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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

Yes. A Certificate of Waiver (number 05D2033297) is associated with this NPI, valid through November 28, 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 was last updated on February 1, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.