Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Teresa Nauenberg, MD

Works at hospitals in Burlingame, CA · Stanford, CA · California

Summary

Dr. Teresa Nauenberg, MD is an internal medicine doctor at 49 Wells Ave, Palo Alto, CA 94301. Phone: (650) 614-3299. Accepts Medicare assignment. In 2024, Teresa Nauenberg had 117 Original Medicare patients and 735 services. NPI 1407963382. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 49 Wells Ave, Palo Alto, CA 94301 · Directions (1 more location)
  • Phone: (650) 614‑3299
  • Medicare: Accepts Medicare assignment
  • Hospitals: Peninsula Medical Center, Stanford Health Care
  • Group practice: Sutter Bay Medical Foundation
  • Medical school: University Of California, San Francisco School Of Medicine · graduated 1996 (30 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Teresa Nauenberg, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Teresa Nauenberg accept Medicare assignment?
Yes. Medicare's clinician data says Teresa Nauenberg accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Teresa Nauenberg see?
In 2024, CMS data shows 117 Original Medicare patients and 735 services for Teresa Nauenberg. This counts Original Medicare only and measures volume, not quality.
What is Teresa Nauenberg's NPI number?
1407963382. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Teresa Nauenberg, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients117
Services billed to Medicare735
Different services or procedures42
Participating Medicare providerYes
Average age of these patients79

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)211 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)110 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)67 services
  4. Admn sarscov2 vacc 1 dose (90480)48 services
  5. Sarscov2 vac 50 mcg/0.5ml im (91322)48 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure55%
  • Arthritis43%
  • Osteoporosis33%
  • Ischemic heart disease26%
  • Atrial fibrillation23%

Hospitals where Teresa Nauenberg works

Medicare's Facility Affiliation Data lists Teresa Nauenberg at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Peninsula Medical CenterBurlingame, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050007
  • Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441

Practice locations

Addresses where Teresa Nauenberg is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Teresa Nauenberg as a member of this group (CMS data updated October 2, 2026).

  • Sutter Bay Medical Foundation3,829 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Palo Alto

Clinicians with the same Medicare primary specialty in Palo Alto, CA — not a recommendation.

All internal medicine doctors in Palo Alto →

Other clinicians in Sutter Bay Medical Foundation

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of California, San Francisco School Of Medicine
Graduation year1996 (30 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1407963382
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians