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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JULIA KATHERINE CREMER M.D.
NPI 1558758300
Internal Medicine - Geriatric Medicine in Tucson, AZ

Active since April 20, 2015PECOS Enrolled
97.64/100
CMS Quality Rating
7901 E 22ND ST, TUCSON, AZ 85710(520) 694-8000(520) 694-8466 Get Directions Write a Review

NPPES record last updated: October 21, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Julia Katherine Cremer M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JULIA KATHERINE CREMER M.D. (NPI 1558758300) is an individual geriatric medicine provider in Tucson, Arizona, licensed in Arizona (69663) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS and is a graduate of University Of Arizona College Of Medicine (2015).

NPPES Registry Identity

NPI1558758300
Entity TypeIndividualFemale
Primary Taxonomy207RG0300X
Provider Legal NameJULIA KATHERINE CREMERCredential: M.D.
Location Address7901 E 22ND STTucson, AZ 85710-8509
Mailing Address7901 E 22nd StTucson, AZ 85710-8509 · (520) 694-8000 · Fax (520) 694-8466
Phone(520) 694-8000
Fax(520) 694-8466
Sole ProprietorNo
Medical School CMSUniversity Of Arizona College Of MedicineGraduated 2015
Enumeration DateApril 20, 2015
Last NPPES UpdateOctober 21, 2026
NPPES CertifiedOctober 21, 2026
✔ NPI 1558758300 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
License✔ Licensed in AZ · 69663
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
7901 E 22ND ST, Tucson, AZ 85710
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health, Blue Cross Blue Shield of Arizona and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Julia Katherine Cremer M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1557698545
PECOS Enrollment IDI20230613000140
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

4

Medicare enrollment records show Julia Cremer reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Banner-University Medical Group
2.5 mi
Nutrition, Education
535 N WILMOT RD STE 101
Tucson, AZ 85711
  • Reassigned Medicare billing, Arizona enrollment
  • 1,514 clinicians in this Medicare group
NPI 1932708328 (520) 694-5437
Regents Of The University Of California
762 mi
Endocrinology, Diabetes & Metabolism
1600 DIVISADERO ST
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 2,112 clinicians in this Medicare group
NPI 1235322348 (415) 353-9720
University Of California San Francisco
762 mi
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1346329380 (415) 353-2161
Ucsf Medical Group Business Services
762 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
194 services113 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
116 services94 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
79 services67 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85710 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$168.60 typical visit price
range $55.44 – $168.60
Typical copayment $42.15 (range $13.86 – $42.15)
Most-billed visit code 99205
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

97.64/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality84.77
Promoting Interoperability98.67
Improvement Activities40

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. DUY KHOA NGUYEN DO
Internal Medicine
7901 E 22ND ST
TUCSON, AZ 85710
Pima County (520) 694-8888
HENRY MARTIN LANG D.O, PH.D
Internal Medicine
7901 E 22ND ST
TUCSON, AZ 85710
Pima County (520) 694-8888
COSTA DALIS MD
Internal Medicine
7901 E 22ND ST
TUCSON, AZ 85710
Pima County (520) 694-8888
KELLIE JEONG
Internal Medicine
7901 E 22ND ST
TUCSON, AZ 85710
Pima County (520) 694-8888
DR. CELESTE RENEE GRACEY DO
Internal Medicine
7901 E 22ND ST
TUCSON, AZ 85710
Pima County (520) 694-8888
ADRIANNA MARIE DIVIERO MD
Internal Medicine
7901 E 22ND ST
TUCSON, AZ 85710
Pima County (520) 694-8888
JUSTIN MINH-TIEN LE
Internal Medicine
7901 E 22ND ST
TUCSON, AZ 85710
Pima County (520) 694-8888
LEVI MITCHELL COHEN MD
Internal Medicine
7901 E 22ND ST
TUCSON, AZ 85710
Pima County (520) 694-0111

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Julia Cremer's NPI number?

The NPI number for Julia Cremer is 1558758300. It was assigned to this individual provider in the NPPES registry on April 20, 2015.

Where is Julia Cremer located?

Julia Cremer practices at 7901 E 22nd St, Tucson, AZ 85710. The listed phone number is (520) 694-8000.

What is Julia Cremer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is Julia Cremer enrolled in Medicare?

Yes. Julia Cremer is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Julia Cremer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Julia Cremer reassigns Medicare benefits to 4 organizations: Banner-University Medical Group (Tucson, AZ), Regents Of The University Of California (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Julia Cremer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Julia Cremer accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona, Oscar Health Plan, Inc. and UnitedHealthcare list Julia Cremer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Julia Cremer was last updated on October 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.