MS. ESTHER AMUYUNZU-RAMIREZ M.D.
NPI 1518387364
Internal Medicine in Sacramento, CA

Q: What is Esther Amuyunzu-ramirez's NPI number?

The NPI number for Esther Amuyunzu-ramirez is 1518387364. It was assigned to this individual provider in the NPPES registry on April 20, 2014. The provider is also known as Esther N Amuyunzu-Ramirez MD.

Q: What is Esther Amuyunzu-ramirez's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since April 20, 2014PECOS EnrolledAccepts Medicare Assignment

80.58/100

CMS Quality Rating

2025 MORSE AVE, SACRAMENTO, CA 95825(916) 973-5000 Get Directions Write a Review

NPPES record last updated: September 26, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Mar 31, 2025, Jul 8, 2022, Sep 5, 2018 (3 updates tracked since 2018).

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About Ms. Esther Amuyunzu-ramirez M.d. NPPES

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

MS. ESTHER AMUYUNZU-RAMIREZ M.D. (NPI 1518387364) is an individual internal medicine provider in Sacramento, California, licensed in California (A139410) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (2014).

NPPES Registry Identity

NPI1518387364

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameMS. ESTHER AMUYUNZU-RAMIREZCredential: M.D.

Location Address2025 MORSE AVESacramento, CA 95825-2115

Mailing Address2025 Morse AveSacramento, CA 95825-2115 · (916) 973-5000

Phone(916) 973-5000

Sole ProprietorNo

Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 2014

Enumeration DateApril 20, 2014

Last NPPES UpdateSeptember 26, 20253 updates tracked since enumeration

NPPES CertifiedSeptember 26, 2025

✔ NPI 1518387364 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A139410

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

2025 MORSE AVE, Sacramento, CA 95825

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Other Names 1

Other Name (5)Esther N Amuyunzu-ramirez Md

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

Ms. Esther Amuyunzu-ramirez 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 ID9335499466

PECOS Enrollment IDI20180911000590

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

Medicare enrollment records show Esther Amuyunzu-ramirez reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Permanente Medical Group Inc

41 mi

Internal Medicine

7373 WEST LANE
Stockton, CA 95210

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1548343510 (209) 476-2000

County Of Santa Clara

85 mi

Federally Qualified Health Center (FQHC)

143 N MAIN ST
Milpitas, CA 95035

Reassigned Medicare billing, California enrollment
2,460 clinicians in this Medicare group

NPI 1285629899 (408) 885-5000

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 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

192 services87 patients

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.

132 services58 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.

77 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.

77 services75 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95825 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

$137.20 typical visit price

range $60.44 – $180.85

Typical copayment $34.30 (range $15.11 – $45.21)

Most-billed visit code 99204

Established Patient

$105.95 typical visit price

range $19.88 – $148.15

Typical copayment $26.48 (range $4.97 – $37.03)

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.

80.58/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

67.43

Promoting Interoperability

100

Improvement Activities

Cost

46.5

Referred Medical Equipment & Supplies CMS DME claims 2

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

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier23 claims23 services$13.59 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 supplier23 claims23 services$58.93 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.

SHARON KAY MCCOY FNP

Nurse Practitioner (Family)