GUILLERMO RAMIREZ
NPI 1740623883
Hospitalist in Santa Cruz, CA

Q: What is Guillermo Ramirez's NPI number?

The NPI number for Guillermo Ramirez is 1740623883. It was assigned to this individual provider in the NPPES registry on April 8, 2013.

Q: What is Guillermo Ramirez's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Guillermo Ramirez was last updated on February 26, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.

Active since April 08, 2013PECOS EnrolledAccepts Medicare Assignment

1661 SOQUEL DR, SANTA CRUZ, CA 95065(831) 460-6042 Get Directions Write a Review

NPPES record last updated: February 26, 2021. Verified against the NPPES registry weekly; last sync: November 08, 2026.

On this page

About Guillermo Ramirez NPPES

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

GUILLERMO RAMIREZ (NPI 1740623883) is an individual hospitalist provider in Santa Cruz, California, licensed in California (A135768) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (2013).

NPPES Registry Identity

NPI1740623883

Entity TypeIndividualMale

Primary Taxonomy208M00000X

Provider Legal NameGUILLERMO RAMIREZ

Location Address1661 SOQUEL DRSanta Cruz, CA 95065-1709

Mailing Address325 Distel CirLos Altos, CA 94022-1408

Phone(831) 460-6042

Sole ProprietorNo

Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 2013

Enumeration DateApril 8, 2013

Last NPPES UpdateFebruary 26, 2021

NPPES CertifiedFebruary 26, 2021

✔ NPI 1740623883 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

License✔ Licensed in CA · A135768

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.

Also ListedInternal MedicineTaxonomy 207R00000X · License A135768 (CA)

1661 SOQUEL DR, Santa Cruz, CA 95065

Open in Google Maps ↗

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

Guillermo Ramirez 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 ID345532685

PECOS Enrollment IDI20160707001475

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 Reassignment

Medicare enrollment records show Guillermo Ramirez reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sutter Bay Medical Foundation

33 mi

Multi-Specialty

795 EL CAMINO REAL
Palo Alto, CA 94301

Reassigned Medicare billing, California enrollment
4,479 clinicians in this Medicare group

NPI 1013950807 (650) 321-4121

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.

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.

267 services109 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.

78 services77 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.

71 services70 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

25 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95065 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

$141.77 typical visit price

range $62.97 – $186.69

Typical copayment $35.44 (range $15.74 – $46.67)

Most-billed visit code 99204

Established Patient

$109.72 typical visit price

range $21.02 – $153.16

Typical copayment $27.43 (range $5.25 – $38.29)

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.

Referred Medical Equipment & Supplies CMS DME claims 5

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Commode chair, mobile or stationary, with detachable arms E0165

DME-Other DME · category DE000N

1 supplier12 claims12 services$7.14 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260

DME-Hospital Beds · category DB000N

1 supplier12 claims12 services$52.65 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier15 claims15 services$81.57 avg. paid by Medicare

Standard wheelchair K0001

DME-Wheelchairs · category DD000N

1 supplier15 claims15 services$12.01 avg. paid by Medicare

Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing K0738

DME-Oxygen and Supplies · category DC000N

1 supplier12 claims12 services$31.48 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

STUART ALLEN MUMM MD

Obstetrics & Gynecology

1661 SOQUEL DR, SUITE A
SANTA CRUZ, CA 95065

Santa Cruz County (831) 476-7676

ROY ELIAS MARTINEZ M.D.

Radiology (Diagnostic Radiology)

1661 SOQUEL DR, BUILDING G
SANTA CRUZ, CA 95065

Santa Cruz County (831) 476-7711

EDWARD HUTCHINSON MENGES MD

Radiology (Diagnostic Radiology)

1661 SOQUEL DR, BLDG G
SANTA CRUZ, CA 95065

Santa Cruz County (831) 476-7711

SHELLY BRUNNER NP-C

Nurse Practitioner (Adult Health)

1661 SOQUEL DR, BUILDING C
SANTA CRUZ, CA 95065

Santa Cruz County (831) 476-3376

MARTINA NICHOLSON MD

Obstetrics & Gynecology

1661 SOQUEL DR, SUITE A
SANTA CRUZ, CA 95065

Santa Cruz County (831) 476-7676

LARISA TAYLOR MD

Obstetrics & Gynecology

1661 SOQUEL DR, SUITE A
SANTA CRUZ, CA 95065

Santa Cruz County (831) 476-7676

DR. JENNIFER C. LIN M.D.

Radiology (Diagnostic Radiology)

1661 SOQUEL DR, BLDG G
SANTA CRUZ, CA 95065

Santa Cruz County (831) 476-1542

MARK ALAN SCHMETZ MD

Radiology (Diagnostic Radiology)

1661 SOQUEL DR, BUILDING G
SANTA CRUZ, CA 95065

Santa Cruz County (831) 476-7711

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 Guillermo Ramirez's NPI number?

The NPI number for Guillermo Ramirez is 1740623883. It was assigned to this individual provider in the NPPES registry on April 8, 2013.

Where is Guillermo Ramirez located?

Guillermo Ramirez practices at 1661 Soquel Dr, Santa Cruz, CA 95065. The listed phone number is (831) 460-6042.

What is Guillermo Ramirez's specialty?

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

Is Guillermo Ramirez enrolled in Medicare?

Yes. Guillermo Ramirez 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 organization bills Medicare for Guillermo Ramirez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Guillermo Ramirez reassigns Medicare benefits to Sutter Bay Medical Foundation (Palo Alto, CA). The 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 Guillermo Ramirez'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 Guillermo Ramirez was last updated on February 26, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.