DANIELA ARANGO ISAZA MD
NPI 1427722990
Hospitalist in San Francisco, CA

Active since August 06, 2021PECOS EnrolledAccepts Medicare Assignment
521 PARNASSUS AVE, SAN FRANCISCO, CA 94143(415) 476-1000 Get Directions Write a Review

NPPES record last updated: May 21, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 21, 2025, Jun 17, 2024, Aug 6, 2021 (3 updates tracked since 2021).

About Daniela Arango Isaza Md NPPES

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

DANIELA ARANGO ISAZA MD (NPI 1427722990) is an individual hospitalist provider in San Francisco, California, licensed in California (A200250) and active in the NPI registry since August 2021. She is enrolled in Medicare PECOS, maintains a secondary practice location in Boston, and is a graduate of Other (2019).

NPPES Registry Identity

NPI1427722990
Entity TypeIndividualFemale
Primary Taxonomy208M00000X
Provider Legal NameDANIELA ARANGO ISAZACredential: MD
Location Address521 PARNASSUS AVESan Francisco, CA 94143-2206
Mailing Address330 Brookline AveBoston, MA 02215-5491 · (617) 667-7000
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateAugust 6, 2021
Last NPPES UpdateMay 21, 20253 updates tracked since enumeration
NPPES CertifiedMay 21, 2025
✔ NPI 1427722990 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
Licenses✔ Licensed in CA · A200250✔ Licensed in MA · 1016156
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
521 PARNASSUS AVE, San Francisco, CA 94143

Secondary Practice Location 1

Location 1330 Brookline AveBoston, MA 02215-5491 · Phone (617) 667-7000

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

Daniela Arango Isaza Md 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 ID4880090885
PECOS Enrollment IDI20250410002997
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

5

Medicare enrollment records show Daniela Arango Isaza reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Endocrinology, Diabetes & Metabolism
505 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 2,112 clinicians in this Medicare group
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
Internal Medicine
330 BROOKLINE AVE, HOSPITALIST PROGRAM, PBS 2
Boston, MA 02215
  • Reassigned Medicare billing, Massachusetts enrollment
  • 346 clinicians in this Medicare group
Internal Medicine
330 BROOKLINE AVE
Boston, MA 02215
  • Reassigned Medicare billing, Massachusetts enrollment
  • 2,579 clinicians in this Medicare group

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 3

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
87 services36 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
43 services42 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
25 services25 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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.

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.

Counselor (Pastoral)
521 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Oral & Maxillofacial Surgery
521 PARNASSUS AVE, C-522
SAN FRANCISCO, CA 94143
Hospitalist
521 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Hospitalist
521 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Hospitalist
521 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Anesthesiology
521 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Anesthesiology
521 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Anesthesiology
521 PARNASSUS AVE, RM C-450
SAN FRANCISCO, CA 94143

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 Daniela Arango Isaza's NPI number?

The NPI number for Daniela Arango Isaza is 1427722990. It was assigned to this individual provider in the NPPES registry on August 6, 2021.

Where is Daniela Arango Isaza located?

Daniela Arango Isaza practices at 521 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (415) 476-1000.

What is Daniela Arango Isaza's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Daniela Arango Isaza enrolled in Medicare?

Yes. Daniela Arango Isaza 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 Daniela Arango Isaza's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Daniela Arango Isaza reassigns Medicare benefits to 5 organizations: Regents Of The University Of California (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA), Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (Boston, MA) and Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (Boston, MA). 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 Daniela Arango Isaza's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Daniela Arango Isaza was last updated on May 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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.