John Petersen, MD

• Internal Medicine Primary
  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,...
  TX license #Q0536 taxonomy 207R00000X
• Emergency Medicine
  An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department....
  CA license #G74917 taxonomy 207P00000X

Part of a multi-provider practice. 9 other active providers share this practice address in NPPES.

1. Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
2. Check the state license is currently active.State licensing boards publish current status; NPPES does not.
3. Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.