Charissa So, M.D.
Internal Medicine Physician · Sylmar, CA
Charissa So, M.D. is an internal medicine physician with a practice address in Sylmar, California, and NPI 1558563700, issued on Jun 1, 2007. Check the license (California A97824, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Charissa So
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A97824 CA
Self-reported in NPPES; status is on the state search - Practice location
- 14445 Olive View Dr # 2B-182, Sylmar, CA 91342
- Phone
- (818) 364-3205
- Enumerated
- Jun 1, 2007
- Entity
- Type 1 · individual
Also registered at 14445 Olive View Dr # 2B-182
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nawal Afif, DOStudent in an Organized Health Care Education/Training Program1205464336
- Christopher Metchnikoff, M.D.Internal Medicine Physician1023365939
- Fabiola Ochoa, MDInternal Medicine Physician1568826956
- Stephanie Ong, MDStudent in an Organized Health Care Education/Training Program1295420347
Verify Charissa So in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A97824Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
96% fewer Medicare Part D claims than the average internal medicine physician in 2024
123 Medicare Part D claims for 61 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Ibuprofen13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
One hospital or facility affiliation
- County OF Los AngelesLos Angeles, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
84 internal medicine physician records list a Sylmar practice address
They are 84 of the 1,454 NPPES records with a Sylmar practice address, and 20,403 internal medicine physician records in California.
All 84 in Sylmar → All 20,403 in California → Every provider in Sylmar →
Other internal medicine physician records in California
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- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Charissa So, M.D.'s NPI number?
Charissa So, M.D.'s National Provider Identifier (NPI) is 1558563700, issued on Jun 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Charissa So, M.D. located?
The NPPES record lists a practice address at 14445 Olive View Dr # 2B-182, Sylmar, CA, 91342. Phone: (818) 364-3205. Providers update this record themselves, so call before visiting.
How can I verify Charissa So, M.D.'s license?
NPPES lists California license number A97824, 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.
How much does Charissa So, M.D. prescribe under Medicare Part D?
In 2024, Charissa So, M.D. had 123 Medicare Part D claims for 61 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.