NPPES file of Aug 9, 2026

Sonya Koo Christianson, MD

Hospice and Palliative Medicine (Family Medicine) Physician · San Diego, CA

Sonya Koo Christianson, MD is a hospice and palliative medicine (family medicine) physician with a practice address in San Diego, California, and NPI 1871751073, issued on May 26, 2008. Check the license (California A103850, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1871751073
Name
Sonya Koo Christianson
Credential
MD
Primary taxonomy
Hospice and Palliative Medicine (Family Medicine) Physician 207QH0002X
License number
A103850 CA
Self-reported in NPPES; status is on the state search
Practice location
4077 5TH Ave, San Diego, CA 92103
Phone
(858) 678-6550
Enumerated
May 26, 2008
Record last updated
Aug 3, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20100629000089); accepts Medicare assignment
Medical or professional school
Southern Illinois University School Of Medicine, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 4077 5TH Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jennifer Agueda, NP-CFamily Nurse Practitioner1124578117
  2. Michael Amadeo, N.P.Family Nurse Practitioner1376947648
  3. Joseph Anderson, PHARMDPharmacist1053125914
  4. Leslie Arias, SLPSpeech-Language Pathologist1417808205
  5. Aleda Barr, RNPsychiatric/Mental Health Registered Nurse1134254048
  6. Geraldine Crowle, PH.D.Clinical Psychologist1043345622

Verify Sonya Koo Christianson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A103850
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Scripps Health Inpatient Providers Medical Group IncSan Diego, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Hospice and Palliative Medicine (Family Medicine) Physician providers in California

There are 128 hospice and palliative medicine (family medicine) physician records in California.

Other hospice and palliative medicine (family medicine) physician records in California

  1. Jason Abney, DOLadera Ranch, CA1992982052
  2. Shivali Agarwal, M.D.Fresno, CA1518493626
  3. Lusine Antinyan, FNPArleta, CA1124783014
  4. Ala Arafa-Price, M.DLos Angeles, CA1043751274
  5. Bijan Badihian, D.O.Claremont, CA1912128695
  6. Forrest Beaty, MDForestville, CA1417070707
  7. Chirag Bhavsar, MDLaguna Hills, CA1386703007
  8. Michael Bi, MDFresno, CA1720583032
  9. Kara Bischoff, M.D.San Francisco, CA1275868721
  10. Laurence Boggeln, M. D.Temecula, CA1992701080

Common questions

What is Sonya Koo Christianson, MD's NPI number?

Sonya Koo Christianson, MD's National Provider Identifier (NPI) is 1871751073, issued on May 26, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Sonya Koo Christianson, MD located?

The NPPES record lists a practice address at 4077 5TH Ave, San Diego, CA, 92103. Phone: (858) 678-6550. Providers update this record themselves, so call before visiting.

How can I verify Sonya Koo Christianson, MD's license?

NPPES lists California license number A103850, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.