Emma Christine Ryan, DO
Surgery Physician · Rancho Cucuamonga, CA
Emma Christine Ryan, DO is a surgery physician with a practice address in Rancho Cucuamonga, California, and NPI 1679920284, issued on May 24, 2016. Check the license (California 18987, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Emma Christine Ryan
- Credential
- DO
- Primary taxonomy
- Surgery Physician 208600000X
- License numbers
- 18987 CA
009083 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 8680 Monroe Court, Rancho Cucuamonga, CA 91730
- Phone
- (909) 987-0899
- Enumerated
- May 24, 2016
- Record last updated
- Nov 30, 2022
- Fax
- (909) 987-9399
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Verify Emma Christine Ryan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 18987Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average surgery physician in 2024
43 Medicare Part D claims for 15 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 12 claims were for opioids.
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: $140.98
2 payments; by number, the most common kind was food and beverage; the largest payer was W. L. Gore & Associates, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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.
Emma Christine Ryan among 3,118 surgery physician records in California
Emma Christine Ryan, DO is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 83% of them.
- NPI issued2016 · 83% of these records are older, 14% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2022 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
The 8 surgery physician records with the nearest ZIP codes
- Jacob Haiavy, M.D.Rancho Cucamonga, CA 917301396958047
- Amanda Khouri, MDRancho Cucamonga, CA 917301093344012
- Matthew Ogbeide, MDRancho Cucamonga, CA 917301437680915
- Brian Spivack, M.D.Rancho Cucamonga, CA 917301295750305
- Michael Hadley, M.D.El Monte, CA 917331568561066
- Timothy Ching, MDCovina, CA 917241396704896
- Robinson Baron, M.D.Covina, CA 917231831103878
- Craig Carter, MD FACSCovina, CA 917231497721344
Common questions
What is Emma Christine Ryan, DO's NPI number?
Emma Christine Ryan, DO's National Provider Identifier (NPI) is 1679920284, issued on May 24, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Emma Christine Ryan, DO located?
The NPPES record lists a practice address at 8680 Monroe Court, Rancho Cucuamonga, CA, 91730. Phone: (909) 987-0899. Providers update this record themselves, so call before visiting.
How can I verify Emma Christine Ryan, DO's license?
NPPES lists California license number 18987, 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 Emma Christine Ryan, DO prescribe under Medicare Part D?
In 2024, Emma Christine Ryan, DO had 43 Medicare Part D claims for 15 beneficiaries; the average among surgery physician prescribers was 147. 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.