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ANNASTASIA MASSO
NPI 1881374809
Nurse Anesthetist, Certified Registered in San Diego, CA

Active since July 24, 2023Accepts Medicare Assignment
34800 BOB WILSON DR, BLDG 1 FL 4 - ANESTHESIA, SAN DIEGO, CA 92134(302) 345-7707 Get Directions Write a Review

NPPES record last updated: May 2, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 2, 2024, Jul 24, 2023 (2 updates tracked since 2023).

About Annastasia Masso NPPES

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

ANNASTASIA MASSO (NPI 1881374809) is an individual nurse anesthetist, certified registered in San Diego, California, licensed in Delaware (L6-0A10938) and active in the NPI registry since July 2023. She is a graduate of Other (2023).

NPPES Registry Identity

NPI1881374809
Entity TypeIndividualFemale
Primary Taxonomy367500000X
Provider Legal NameANNASTASIA MASSO
Location Address34800 BOB WILSON DR, BLDG 1 FL 4 - ANESTHESIASan Diego, CA 92134
Mailing Address3825 Centre St Unit 31San Diego, CA 92103-3621 · (302) 345-7707
Phone(302) 345-7707
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateJuly 24, 2023
Last NPPES UpdateMay 2, 20242 updates tracked since enumeration
NPPES CertifiedMay 2, 2024
✔ NPI 1881374809 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367500000X
License✔ Licensed in DE · L6-0A10938
Definition
(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.
34800 BOB WILSON DR, San Diego, CA 92134
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Annastasia Masso 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 ID1850838400
PECOS Enrollment IDI20240801000691

Medicare Billing Reassignments

7

Medicare enrollment records show Annastasia Masso reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Samantha Polikowski Anesthesia Inc
8.4 mi
Nurse Anesthetist, Certified Registered
835 THIRD AVE STE A
Chula Vista, CA 91911
  • Reassigned Medicare billing, California enrollment
  • 43 clinicians in this Medicare group
NPI 1851157028 (619) 425-7755
Temecula Ca United Surgery Center LP
52 mi
Anesthesiology
31469 RANCHO PUEBLO RD, SUITE 100
Temecula, CA 92592
  • Reassigned Medicare billing, California enrollment
  • 40 clinicians in this Medicare group
NPI 1013376482 (951) 303-6890
Trinity Anesthesia Group Inc
52 mi
Anesthesiology
31625 DE PORTOLA RD STE 101
Temecula, CA 92592
  • Reassigned Medicare billing, California enrollment
  • 27 clinicians in this Medicare group
NPI 1861078693 (951) 501-4200
Temecula Ca Endoscopy ASC LP
58 mi
Anesthesiology
25150 HANCOCK AVE, SUITE 208
Murrieta, CA 92562
  • Reassigned Medicare billing, California enrollment
  • 40 clinicians in this Medicare group
NPI 1285863696 (951) 698-8805
United Medical Doctors
61 mi
Gastroenterology
28078 BAXTER RD STE 530
Murrieta, CA 92563
  • Reassigned Medicare billing, California enrollment
  • 240 clinicians in this Medicare group
NPI 1770559981 (951) 566-5229
San Gabriel Anesthesia Associates, PC
81 mi
Nurse Anesthetist, Certified Registered
1403 N TUSTIN AVE STE 100
Santa Ana, CA 92705
  • Reassigned Medicare billing, California enrollment
  • 40 clinicians in this Medicare group
NPI 1538424908 (714) 633-1338
Regents Of The University Of
85 mi
Anesthesiology
101 THE CITY DR SOUTH
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 420 clinicians in this Medicare group
NPI 1487602546 (714) 456-8068

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92134 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
$140.22 typical visit price
range $62.10 – $184.71
Typical copayment $35.05 (range $15.52 – $46.17)
Most-billed visit code 99204
Established Patient
$76.87 typical visit price
range $20.62 – $151.42
Typical copayment $19.21 (range $5.15 – $37.85)
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.

LORENA MARIE FUJII N.P.
Nurse Practitioner (Pediatrics)
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 532-8910
JANELLE MARIE MARRA DO
Family Medicine
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 532-6400
LAKIESHA NICOLE MURPHY
Nurse's Aide
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 713-3385
SUSANNA BYRNE D.O.
Anesthesiology
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 532-6400
DR. PAUL CHARLES CAMPBELL D.O.
Urology (Pediatric Urology)
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 532-7200
PHILLIP EDWARD FRY JR. DO
Emergency Medicine
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 532-6400
BRADLY JAMES STILLEY IDC
Military Health Care Provider (Independent Duty Corpsman)
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (360) 941-9989
DR. ELIZABETH WHIPPLE PHD
Military Health Care Provider
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 532-6400

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 Annastasia Masso's NPI number?

The NPI number for Annastasia Masso is 1881374809. It was assigned to this individual provider in the NPPES registry on July 24, 2023.

Where is Annastasia Masso located?

Annastasia Masso practices at 34800 Bob Wilson Dr Bldg 1 Fl 4 - Anesthesia, San Diego, CA 92134. The listed phone number is (302) 345-7707.

What is Annastasia Masso's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Is Annastasia Masso enrolled in Medicare?

Yes. Annastasia Masso 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.

Which organizations bill Medicare for Annastasia Masso's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Annastasia Masso reassigns Medicare benefits to 7 organizations: Samantha Polikowski Anesthesia Inc (Chula Vista, CA), Temecula Ca United Surgery Center LP (Temecula, CA), Trinity Anesthesia Group Inc (Temecula, CA), Temecula Ca Endoscopy ASC LP (Murrieta, CA), United Medical Doctors (Murrieta, CA) and 2 more organizations, listed in the Medicare section above. Each 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 Annastasia Masso's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Annastasia Masso was last updated on May 2, 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.