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LEROY WAYNE KEISER M.D.
NPI 1417047283
Internal Medicine - Hematology & Oncology in Santa Rosa, CA

Active since October 13, 2006PECOS EnrolledAccepts Medicare Assignment
3555 ROUND BARN CIR STE 100, SANTA ROSA, CA 95403(707) 528-1050(707) 525-3874 Get Directions Write a Review

NPPES record last updated: November 3, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Nov 3, 2021, Sep 6, 2018, Jul 31, 2018 and 1 more (4 updates tracked since 2017).

About Leroy Wayne Keiser M.d. NPPES

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

LEROY WAYNE KEISER M.D. (NPI 1417047283) is an individual hematology & oncology provider in Santa Rosa, California, licensed in California (G28436) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Stanford University School Of Medicine (1973).

NPPES Registry Identity

NPI1417047283
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameLEROY WAYNE KEISERCredential: M.D.
Location Address3555 ROUND BARN CIR STE 100Santa Rosa, CA 95403-1757
Mailing Address3555 Round Barn CirSanta Rosa, CA 95403-1757
Phone(707) 528-1050
Fax(707) 525-3874
Sole ProprietorNo
Medical School CMSStanford University School Of MedicineGraduated 1973
Enumeration DateOctober 13, 2006
Last NPPES UpdateNovember 3, 20214 updates tracked since enumeration
NPPES CertifiedNovember 3, 2021
✔ NPI 1417047283 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in CA · G28436
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License G28436 (CA)
Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License G28436 (CA)
3555 ROUND BARN CIR STE 100, Santa Rosa, CA 95403
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Other Identifiers 1

Medicaid00G284360CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Leroy Wayne Keiser 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 ID2264335934
PECOS Enrollment IDI20040129000947
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.

Areas of Expertise CMS Part B claims 7

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.
993 services423 patients
Telephone medical discussion with physician, 21-30 minutes 99443
This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.
376 services157 patients
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.
347 services159 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.
89 services45 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.
57 services57 patients
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
16 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95403 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
$187.01 typical visit price
range $63.04 – $187.01
Typical copayment $46.75 (range $15.76 – $46.75)
Most-billed visit code 99205
Established Patient
$109.88 typical visit price
range $21.02 – $153.40
Typical copayment $27.47 (range $5.25 – $38.35)
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.

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 supplier12 claims12 services$17.51 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 supplier12 claims12 services$88.74 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

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

REDWOOD REGIONAL MEDICAL GROUP, INC.
Internal Medicine (Hematology & Oncology)
3555 ROUND BARN CIR STE 100
SANTA ROSA, CA 95403
Sonoma County (707) 528-1050

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 Leroy Wayne Keiser's NPI number?

The NPI number for Leroy Wayne Keiser is 1417047283. It was assigned to this individual provider in the NPPES registry on October 13, 2006.

Where is Leroy Wayne Keiser located?

Leroy Wayne Keiser practices at 3555 Round Barn Cir Ste 100, Santa Rosa, CA 95403. The listed phone number is (707) 528-1050.

What is Leroy Wayne Keiser's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Leroy Wayne Keiser enrolled in Medicare?

Yes. Leroy Wayne Keiser 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.

When was this NPI record last updated?

The NPPES record for Leroy Wayne Keiser was last updated on November 3, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.