Paula Sung-Hyon Cho, MD
Nephrology Physician · Fontana, CA
Paula Sung-Hyon Cho, MD is a nephrology physician with a practice address in Fontana, California, and NPI 1245399906, issued on Dec 8, 2006. Check the license (California A74570, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Paula Sung-Hyon Cho
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A74570 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9961 Sierra Ave, Fontana, CA 92335
- Phone
- (909) 427-3910
- Enumerated
- Dec 8, 2006
- Record last updated
- Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040630001006); accepts Medicare assignment
- Medical or professional school
- R Franklin University Of Med & Sci/Chicago Medical School, 1999
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 9961 Sierra Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Paula Sung-Hyon Cho in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A74570Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3% fewer Medicare Part D claims than the average nephrology physician in 2024
1,419 Medicare Part D claims for 276 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Losartan Potassium120 claims
- Potassium Chloride120 claims
- Amlodipine Besylate118 claims
- Furosemide115 claims
- Lisinopril102 claims
- Hydralazine Hcl83 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.
Industry payments in 2024: $136.09
1 payment: food and beverage; the largest payer was Boston Scientific Corporation. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupOntario, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Paula Sung-Hyon Cho among 1,468 nephrology physician records in California
Paula Sung-Hyon Cho, MD is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 48% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1999 · median 2001 among the 1,128 with a school on file
- Record last updated2021 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Fontana → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Andy Chuu, MDFontana, CA 923351639565286
- Woldemariam Gebreselassie, MDFontana, CA 923351811056427
- George Grames, M.D.Fontana, CA 923351770693087
- Jan Herrman, MDFontana, CA 923351235200270
- Talha Imam, MDFontana, CA 923351740357557
- Jennet Lee, MDFontana, CA 923351861569683
- Charles Lu, MDFontana, CA 923351457409435
- Jason Mak, MDFontana, CA 923351851450456
Common questions
What is Paula Sung-Hyon Cho, MD's NPI number?
Paula Sung-Hyon Cho, MD's National Provider Identifier (NPI) is 1245399906, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Paula Sung-Hyon Cho, MD located?
The NPPES record lists a practice address at 9961 Sierra Ave, Fontana, CA, 92335. Phone: (909) 427-3910. Providers update this record themselves, so call before visiting.
How can I verify Paula Sung-Hyon Cho, MD's license?
NPPES lists California license number A74570, 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 Paula Sung-Hyon Cho, MD prescribe under Medicare Part D?
In 2024, Paula Sung-Hyon Cho, MD had 1,419 Medicare Part D claims for 276 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
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.