Jon Stephen Portnoff, MD - Medicare in Ukiah, CA

Jon Stephen Portnoff, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in Ukiah, California. His current practice location is 260 Hospital Dr, Suite 207, Ukiah, California. You can reach out to his office (for appointments etc.) via phone at (707) 463-2400.

Jon Stephen Portnoff is licensed to practice in California (license number A43219) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1609874445.

Contact Information

Jon Stephen Portnoff, MD
260 Hospital Dr, Suite 207,
Ukiah, CA 95482-4533
(707) 463-2400
(707) 463-3520

Map and Direction




Physician's Profile

Full NameJon Stephen Portnoff
GenderMale
Speciality
Experience Years
Location260 Hospital Dr, Ukiah, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Jon Stephen Portnoff attended and graduated from in
  NPI Data:
  • NPI Number: 1609874445
  • Provider Enumeration Date: 07/13/2005
  • Last Update Date: 10/25/2012
  Medicare PECOS Information:
  • PECOS PAC ID:
  • Enrollment ID:

Medical Identifiers

Medical identifiers for Jon Stephen Portnoff such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1609874445NPI-NPPES
00A432190MedicaidCA
ZZZ00872ZOtherCAMEDICARE PTAN
00A432190OtherCABLUE SHIELD OF CALIFORNIA
060020995OtherCARAILROAD MEDICARE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0000XInternal Medicine - Cardiovascular Disease A43219 (California)Primary
207RI0011XInternal Medicine - Interventional Cardiology A43219 (California)Secondary

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Jon Stephen Portnoff is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Jon Stephen Portnoff, MD
Po Box 2739,
Ukiah, CA 95482-2739

Ph: (707) 463-8000
Jon Stephen Portnoff, MD
260 Hospital Dr, Suite 207,
Ukiah, CA 95482-4533

Ph: (707) 463-2400

Reviews and Comments


Internal Medicine Doctors in Ukiah, CA

Dr. Guy Teran, M.D.
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 260 Hospital Dr, Ukiah, CA 95482
Phone: 707-463-8000    Fax: 707-462-1111
Christine Ives, M.D.
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 275 S Orchard Ave, Ukiah, CA 95482
Phone: 707-463-3440    Fax: 707-463-3446
Dr. Ronald Sean Batin, M.D.
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 232 Hospital Dr Ste A, Ukiah, CA 95482
Phone: 707-467-3189    
Linda Louise Mulligan, M.D.
Cardiovascular Disease
Medicare: Medicare Enrolled
Practice Location: 630 Kings Ct, Ukiah, CA 95482
Phone: 707-468-7700    
Artin Mahmoudi, M.D.
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 275 Hospital Dr, Sonora Regional Medical Center, Ukiah, CA 95482
Phone: 707-462-3111    
Harry Berj Matossian, M.D.
Cardiovascular Disease
Medicare: Medicare Enrolled
Practice Location: 234 Hospital Dr, Ukiah, CA 95482
Phone: 707-462-0681    Fax: 707-462-4647
Iyad Hanna, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 260 Hospital Dr, Suite 103, Ukiah, CA 95482
Phone: 707-463-8028    Fax: 707-462-7382

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.