DR. JAMES FLORENCIO DEC TAMESIS M.D.
NPI 1568819050
Internal Medicine in Roseville, CA

Q: What is James Florencio Tamesis's NPI number?

The NPI number for James Florencio Tamesis is 1568819050. It was assigned to this individual provider in the NPPES registry on May 16, 2016.

Q: What is James Florencio Tamesis's specialty?

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

Active since May 16, 2016PECOS EnrolledAccepts Medicare Assignment

2050 BLUE OAKS BLVD, ROSEVILLE, CA 95747(916) 910-2400(916) 910-2355 Get Directions Write a Review

NPPES record last updated: August 6, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 6, 2021, May 16, 2016 (2 updates tracked since 2016).

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About Dr. James Florencio Dec Tamesis M.d. NPPES

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

DR. JAMES FLORENCIO DEC TAMESIS M.D. (NPI 1568819050) is an individual internal medicine provider in Roseville, California, licensed in California (A172259) and active in the NPI registry since May 2016. He is enrolled in Medicare PECOS and is a graduate of Other (2013).

NPPES Registry Identity

NPI1568819050

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. JAMES FLORENCIO DEC TAMESISCredential: M.D.

Location Address2050 BLUE OAKS BLVDRoseville, CA 95747-6506

Mailing Address2111 W Snead StLa Habra, CA 90631-9509 · (562) 640-2300 · Fax (216) 363-7490

Phone(916) 910-2400

Fax(916) 910-2355

Sole ProprietorNo

Medical School CMSOtherGraduated 2013

Enumeration DateMay 16, 2016

Last NPPES UpdateAugust 6, 20212 updates tracked since enumeration

NPPES CertifiedAugust 6, 2021

✔ NPI 1568819050 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A172259

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.

2050 BLUE OAKS BLVD, Roseville, CA 95747

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.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

Dr. James Florencio Dec Tamesis 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 ID2668708942

PECOS Enrollment IDI20210812003260

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 James Florencio Tamesis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sutter Medical Foundation

11 mi

Diagnostic Radiology

2800 L ST FL 7
Sacramento, CA 95816

Reassigned Medicare billing, California enrollment
Medicare enrollment name: Sutter Valley Medical Foundation
3,056 clinicians in this Medicare group

NPI 1942524095 (916) 731-7857

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 8

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 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.

222 services117 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

77 services77 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.

69 services55 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

20 services20 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

20 services20 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

19 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95747 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.

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.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

4 suppliers13 claims23 services$2.97 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 supplier19 claims19 services$62.00 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 8

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

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