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DATNGUYEN MD INC
NPI 1215977723
Internal Medicine in San Diego, CA

Active since June 07, 2006
9855 ERMA RD STE 133, SAN DIEGO, CA 92131(760) 656-5523 Get Directions Write a Review

NPPES record last updated: June 17, 2024. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Jun 17, 2024, May 3, 2023, Feb 11, 2022 and 3 more (6 updates tracked since 2015).

About Datnguyen Md Inc NPPES

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

DATNGUYEN MD INC (NPI 1215977723) is a healthcare organization registered as an internal medicine in San Diego, California and active in the NPI registry since June 2006. The organization maintains a secondary practice location in La Mesa and lists Dat William Nguyen, President, as its authorized official.

NPPES Registry Identity

NPI1215977723
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameDATNGUYEN MD INC
Location Address9855 ERMA RD STE 133San Diego, CA 92131-1092
Mailing AddressPo Box 8005Rancho Santa Fe, CA 92067-8005 · (858) 349-3760 · Fax (800) 334-1041
Phone(760) 656-5523
Organization SubpartNo
Authorized OfficialDat William NguyenPresident · (866) 284-2771
Enumeration DateJune 7, 2006
Last NPPES UpdateJune 17, 20246 updates tracked since enumeration
NPPES CertifiedJune 17, 2024
✔ NPI 1215977723 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A83262
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.
9855 ERMA RD STE 133, San Diego, CA 92131
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Secondary Practice Location 1

Location 15565 Grossmont Center Dr Ste 229LA Mesa, CA 91942-3026 · Phone (858) 349-3760 · Fax (619) 280-5800

Group Practice 2

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP
Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE 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)

Datnguyen Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

42

Medicare enrollment records show 42 clinicians reassign Medicare billing to Datnguyen MD Inc, which bills Medicare for the services they deliver. Of these, 5 practice at this address and 7 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 6

Nurse Practitioner23
Internal Medicine9
Psychiatry6
Clinical Psychologist2
Marriage and Family Therapist1
Neurology1

Nearest to this location (20)

See all 42
Lena Chung, PMHNP-BC
Nurse Practitioner
NPI 1831544766
9855 ERMA RD STE 133
San Diego, CA 92131
(858) 342-4572
✔ PECOS✔ Accepts MedicareSame address
Daisy Concon, PMHNP
Nurse Practitioner
NPI 1417695867
9855 ERMA RD STE 133
San Diego, CA 92131
(858) 342-4572
✔ PECOS✔ Accepts MedicareSame address
Linda Hoang
Nurse Practitioner
NPI 1447992193
9855 ERMA RD STE 133
San Diego, CA 92131
(760) 656-5523
✔ PECOS✔ Accepts MedicareSame address
Alexandra Macedo, NP
Nurse Practitioner
NPI 1598375834
9855 ERMA RD STE 133
San Diego, CA 92131
(619) 531-5800
✔ PECOS✔ Accepts MedicareSame address
Thong Pham
Nurse Practitioner
NPI 1194318436
9855 ERMA RD STE 133
San Diego, CA 92131
(858) 343-4572
✔ PECOS✔ Accepts MedicareSame address
Jeffensen Jay Timacdog
Nurse Practitioner
NPI 1083103956
6920 MIRAMAR RD STE 326
San Diego, CA 92121
(619) 345-0086
✔ PECOS✔ Accepts Medicare4.1 mi
Kyle Gambill
Nurse Practitioner
NPI 1730054883
2560 NORTHSIDE DR APT 212
San Diego, CA 92108
(760) 985-7397
✔ PECOS✔ Accepts Medicare9.4 mi
Wilfredo Abesamis, M.D.
Internal Medicine
NPI 1992754832
6386 ALVARADO CT 310
San Diego, CA 92120
(619) 229-5075
✔ PECOS✔ Accepts Medicare10 mi
Ajay Kumra, RN
Nurse Practitioner
NPI 1902385644
6719 ALVARADO RD STE 201
San Diego, CA 92120
(847) 454-6272
✔ PECOS✔ Accepts Medicare10 mi
Silpa Reddy, D.O.
Internal Medicine
NPI 1013386432
6719 ALVARADO RD SUITE 108
San Diego, CA 92120
(619) 286-8803
✔ PECOS✔ Accepts Medicare10 mi
Charles Le, M.D.
Internal Medicine
NPI 1821243759
4440 EUCLID AVE SUITE A
San Diego, CA 92115
(619) 521-6812
✔ PECOS✔ Accepts Medicare11 mi
Sara Vo, PMHNP
Nurse Practitioner
NPI 1053132902
8881 FLETCHER PKWY STE 350-360
La Mesa, CA 91942
(858) 279-1223
✔ PECOS✔ Accepts Medicare11 mi
Stephen Kaiser, M.D.
Psychiatry
NPI 1245677624
5555 GROSSMONT CENTER DR
La Mesa, CA 91942
(619) 356-3216
✔ PECOS✔ Accepts Medicare11 mi
Kourosh Khamooshian, MD
Internal Medicine
NPI 1659523975
5565 GROSSMONT CENTER DR STE 444
La Mesa, CA 91942
(888) 475-6662
✔ PECOS✔ Accepts Medicare11 mi
Brandon Ro, MSN, PMHNP
Nurse Practitioner
NPI 1487381059
5565 GROSSMONT CENTER DR STE 229
La Mesa, CA 91942
(858) 342-4572
✔ PECOS✔ Accepts Medicare11 mi
Sasha Recht, DNP, FNP-BC
Nurse Practitioner
NPI 1851057087
555 WASHINGTON ST
San Diego, CA 92103
(619) 260-8300
✔ PECOS✔ Accepts Medicare12 mi
Edelpaulette Jane Pugh
Marriage and Family Therapist
NPI 1902383334
374 H ST
Chula Vista, CA 91910
(619) 510-8480
✔ PECOS✔ Accepts Medicare15 mi
Markus Ploesser, MD
Psychiatry
NPI 1669662755
CDCR 765 THIRD AVENUE STE 300
Chula Vista, CA 91910
(619) 476-3700
✔ PECOS✔ Accepts Medicare20 mi
Thomas Ward-Mckinlay, PH.D.
Clinical Psychologist
NPI 1346778081
2966 NIGHT WATCH WAY
Alpine, CA 91901
(203) 530-1491
✔ PECOS✔ Accepts Medicare21 mi
Brittany Voelker, PSYCHOLOGIST 35615
Psychiatry
NPI 1841096492
1269 INDIAN CREEK DR
Chula Vista, CA 91915
(619) 755-5589
✔ PECOS✔ Accepts Medicare21 mi
See all 42 clinicians

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 Datnguyen MD Inc's NPI number?

The NPI number for Datnguyen MD Inc is 1215977723. It was assigned to this organization in the NPPES registry on June 7, 2006.

Where is Datnguyen MD Inc located?

Datnguyen MD Inc is located at 9855 Erma Rd Ste 133, San Diego, CA 92131. The listed phone number is (760) 656-5523.

What is Datnguyen MD Inc's specialty?

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

Is Datnguyen MD Inc enrolled in Medicare?

Yes. Datnguyen MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Datnguyen MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 42 clinicians in 6 Medicare specialties reassign their Medicare billing to Datnguyen MD 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 (23), Internal Medicine (9) and Psychiatry (6). Of these, 5 practice at this address and 7 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 Datnguyen MD Inc was last updated on June 17, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.