Janaki N. Ramanathan, MD

Diagnostic Radiology (CMS) · San Francisco, CA

Call (415) 600-3143 Directions

At a glance

2351 Clay St Ste 100, San Francisco, CA 94115-1931

NPPES record updated Sep 23, 2020. Public records can lag behind changes at a practice.

Before you call: a quick checklist

Are you accepting new patients?
Do you accept my specific insurance plan?
Do you provide the service I need at this address?
Do I need a referral, and what is the earliest appointment?

Insurance participation and appointment availability are not established by these public records.

Medicare & insurance

Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.

How to check your coverage

Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.

Check the official Medicare directory ↗

Practice location

2351 Clay St Ste 100
San Francisco, CA 94115-1931

Additional reported practice locations

1101 Van Ness Ave Fl 3
San Francisco, CA 941096919
Phone: 4156003232
Fax: 4154476335

250 Bon Air Rd
Greenbrae, CA 949041702
Phone: 4159257301
Fax: 4159257317

2808 S 143Rd Plz
Omaha, NE 681445611
Phone: 4026091800

555 Kinderkamack Rd
Oradell, NJ 076491517
Phone: 2014882660

180 Rowland Way
Novato, CA 949455009
Phone: 4152091500
Fax: 4152091501

347 Andrieux St
Sonoma, CA 954766811
Phone: 7079355265
Fax: 7079355438

2408 E 81St St Ste 900
Tulsa, OK 741374283
Phone: 9184775000

2351 E 22Nd St
Cleveland, OH 441153111
Phone: 2133632677

181 W Meadow Dr Ste 100
Vail, CO 816575058
Phone: 9704797252

3301 El Camino Real Ste 100
Atherton, CA 940273803
Phone: 6503643080
Fax: 6503642004

REPORTED BACKGROUND

Education & affiliations

Medical / professional school: University Of Texas Medical Branch At Galveston
Graduation year: 1998
CMS specialties: Diagnostic Radiology

Practice groups

Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.

Source: CMS National Downloadable File · Published Oct 15, 2026.

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PUBLISHED MEDICARE ACTIVITY

Procedures in the public data

Reported activity can help you ask more informed questions about a practice’s services.

No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.

CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology

Source: CMS Utilization Data · Published Oct 15, 2026.

Service-mix comparison is unavailable for this NPI in the imported Medicare service file.

PAYMENT TRANSPARENCY

Industry-reported general payments

No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.

Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.

Professional details: NPI, taxonomy & registry record

NPI1275611873

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Registry details

Primary taxonomy: Diagnostic Radiology (CMS)
Taxonomy code: 2085R0202X
Enumeration date: Nov 1, 2006
Record updated: Sep 23, 2020

More registry details

Provider type: Individual · Type 1
Reported credentials: MD