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Endocrinology

Cynthia G. Rivas Pajuelo, MD

Works at hospitals in Tucson, AZ · Arizona

Summary

Dr. Cynthia G. Rivas Pajuelo, MD is an endocrinologist at 2380 N Ferguson Ave, Suite 104, Tucson, AZ 85712. Phone: (520) 324-1010. Accepts Medicare assignment. In 2024, Cynthia G. Rivas Pajuelo had 183 Original Medicare patients and 443 services. NPI 1669967154. 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: Endocrinologist (Medicare lists Endocrinology)
  • Address: 2380 N Ferguson Ave, Suite 104, Tucson, AZ 85712 · Directions (2 more locations)
  • Phone: (520) 324‑1010
  • Medicare: Accepts Medicare assignment
  • Hospital: Tucson Medical Center
  • Group practice: TMC Medical Network (+1 more)
  • Medical school: graduated 2015 (11 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 Cynthia G. Rivas Pajuelo, 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 Cynthia G. Rivas Pajuelo accept Medicare assignment?
Yes. Medicare's clinician data says Cynthia G. Rivas Pajuelo 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 Cynthia G. Rivas Pajuelo see?
In 2024, CMS data shows 183 Original Medicare patients and 443 services for Cynthia G. Rivas Pajuelo. This counts Original Medicare only and measures volume, not quality.
What is Cynthia G. Rivas Pajuelo's NPI number?
1669967154. 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 Cynthia G. Rivas Pajuelo, 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 patients183
Services billed to Medicare443
Different services or procedures12
Participating Medicare providerYes
Average age of these patients72

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)182 services
  2. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)119 services
  3. Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report (95251)58 services
  4. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)22 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 pressure74%
  • Diabetes46%
  • Arthritis45%
  • Chronic kidney disease32%
  • Osteoporosis30%

Hospitals where Cynthia G. Rivas Pajuelo works

Medicare's Facility Affiliation Data lists Cynthia G. Rivas Pajuelo 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.

  • Tucson Medical CenterTucson, AZ · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 030006

Practice locations

Addresses where Cynthia G. Rivas Pajuelo is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Cynthia G. Rivas Pajuelo as a member of these groups (CMS data updated October 2, 2026).

  • TMC Medical Network281 clinicians in the group
  • Tmcone96 clinicians in the group

Specialties

Find other Endocrinology doctors in Arizona →

Other endocrinologists in Tucson

Clinicians with the same Medicare primary specialty in Tucson, AZ — not a recommendation.

All endocrinologists in Tucson →

Other clinicians in TMC Medical Network

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

Clinician information

CredentialMD
Graduation year2015 (11 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1669967154
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