Christopher John Ng Co, M.D
Internal Medicine Physician · Oakland, CA
Christopher John Ng Co, M.D is an internal medicine physician with a practice address in Oakland, California, and NPI 1679704969, issued on Aug 4, 2009. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christopher John Ng Co
- Credential
- M.D
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036124209 IL
Self-reported in NPPES; status is on the state search - Practice location
- 250 East 18TH Street, Oakland, CA 94606
- Phone
- (510) 735-3888
- Enumerated
- Aug 4, 2009
- Record last updated
- May 3, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (510) 628-0568
- Medicare enrollment
- Enrolled (PECOS I20170509001584); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 250 East 18TH Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Wi Lee Kim, N.P.Adult Health Nurse Practitioner1609837780
Verify Christopher John Ng Co in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,418 Medicare Part D claims for 259 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium190 claims
- Amlodipine Besylate159 claims
- Losartan Potassium92 claims
- Metformin Hcl87 claims
- Lisinopril57 claims
- Albuterol Sulfate Hfa48 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: $34.88
2 payments; by number, the most common kind was education; the largest payer was Pfizer Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- American Current Care OF California A Medical CorporationMilpitas, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher John Ng Co among 17,696 internal medicine physician records in California
Christopher John Ng Co, M.D is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2003 · median 2004 among the 11,065 with a school on file
- Record last updated2017 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
432 internal medicine physician records list a practice address in Oakland
They are 432 of the 18,558 NPPES records with a practice address in Oakland, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Oakland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Bay Dang-Vu, MDOakland, CA 946061376575639
- Robert Davis, MDOakland, CA 946061881772952
- Dipankar Ghosh, DOOakland, CA 946061508020009
- Bill Longwell, MDOakland, CA 946061821169475
- Mychi Nguyen, M.D.Oakland, CA 946061366615163
Common questions
What is Christopher John Ng Co, M.D's NPI number?
Christopher John Ng Co, M.D's National Provider Identifier (NPI) is 1679704969, issued on Aug 4, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Christopher John Ng Co, M.D located?
The NPPES record lists a practice address at 250 East 18TH Street, Oakland, CA, 94606. Phone: (510) 735-3888. Providers update this record themselves, so call before visiting.
How can I verify Christopher John Ng Co, M.D's license?
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 Christopher John Ng Co, M.D prescribe under Medicare Part D?
In 2024, Christopher John Ng Co, M.D had 1,418 Medicare Part D claims for 259 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.