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DR. CHRISTOPHER JOHN NG CO M.D
NPI 1679704969
Internal Medicine in Oakland, CA

Active since August 04, 2009PECOS Enrolled
250 EAST 18TH STREET, OAKLAND, CA 94606(510) 735-3888(510) 628-0568 Get Directions Write a Review

NPPES record last updated: May 3, 2017. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Christopher John Ng Co M.d NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CHRISTOPHER JOHN NG CO M.D (NPI 1679704969) is an individual internal medicine provider in Oakland, California, licensed in Illinois (036124209) and active in the NPI registry since August 2009. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1679704969
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. CHRISTOPHER JOHN NG COCredential: M.D
Location Address250 EAST 18TH STREETOakland, CA 94606
Mailing Address250 East 18th Street, 2nd FloorOakland, CA 94606 · (510) 735-3888 · Fax (510) 628-0568
Phone(510) 735-3888
Fax(510) 628-0568
Sole ProprietorYes
Enumeration DateAugust 4, 2009
Last NPPES UpdateMay 3, 2017
✔ NPI 1679704969 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 036124209
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
250 EAST 18TH STREET, Oakland, CA 94606
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Christopher John Ng Co M.d is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Christopher John Co reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Asian Health Services
Same address
Federally Qualified Health Center (FQHC)
250 E 18TH ST FL 2
Oakland, CA 94606
  • Reassigned Medicare billing, California enrollment
  • 130 clinicians in this Medicare group
NPI 1003134545 (510) 986-6860
American Current Care Of California, A Medical Corporation
7.9 mi
Urgent Care
26 CALIFORNIA ST
San Francisco, CA 94111
  • Reassigned Medicare billing, California enrollment
  • 304 clinicians in this Medicare group
NPI 1932491685 (415) 781-7077

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94606 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
3 suppliers19 claims38 services$3.48 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
5 suppliers18 claims19 services$0.54 avg. paid by Medicare
Standard wheelchair K0001
DME-Wheelchairs · category DD000N
3 suppliers35 claims35 services$12.34 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
1 supplier13 claims13 services$201.19 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. WI LEE LEE KIM N.P.
Nurse Practitioner (Adult Health)
250 EAST 18TH STREET
OAKLAND, CA 94606
Alameda County (510) 735-3888

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Christopher John Co's NPI number?

The NPI number for Christopher John Co is 1679704969. It was assigned to this individual provider in the NPPES registry on August 4, 2009.

Where is Christopher John Co located?

Christopher John Co practices at 250 East 18th Street, Oakland, CA 94606. The listed phone number is (510) 735-3888.

What is Christopher John Co's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Christopher John Co enrolled in Medicare?

Yes. Christopher John Co is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Christopher John Co's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Christopher John Co reassigns Medicare benefits to 2 organizations: Asian Health Services (Oakland, CA) and American Current Care Of California, A Medical Corporation (San Francisco, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Christopher John Co's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Christopher John Co was last updated on May 3, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.