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STEVEN R TOLKAN MD
NPI 1871554766
Internal Medicine - Nephrology in Fairfield, CA

Active since March 30, 2006PECOS Enrolled
1525 WEBSTER ST STE A, FAIRFIELD, CA 94533(707) 423-2506(707) 429-1158 Get Directions Write a Review

NPPES record last updated: April 24, 2014. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Steven R Tolkan Md NPPES

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

STEVEN R TOLKAN MD (NPI 1871554766) is an individual nephrology provider in Fairfield, California, licensed in California (G83696) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Wisconsin School Of Medicine (1973).

NPPES Registry Identity

NPI1871554766
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameSTEVEN R TOLKANCredential: MD
Location Address1525 WEBSTER ST STE AFairfield, CA 94533-4935
Mailing Address1525 Webster St Ste AFairfield, CA 94533-4935 · (707) 423-2510 · Fax (707) 425-4236
Phone(707) 423-2506
Fax(707) 429-1158
Sole ProprietorYes
Medical School CMSUniversity Of Wisconsin School Of MedicineGraduated 1973
Enumeration DateMarch 30, 2006
Last NPPES UpdateApril 24, 2014
✔ NPI 1871554766 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in CA · G83696
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
Also ListedInternal MedicineTaxonomy 207R00000X · License G83696 (CA)
1525 WEBSTER ST STE A, Fairfield, CA 94533
Open in Google Maps ↗

Other Identifiers 2

Medicare UPINC88487
Medicare ID-Type Unspecified00G836960CA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Steven R Tolkan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID5294893707
PECOS Enrollment IDI20081027000652
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 6

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.

Dialysis services, 2-3 physician visits per month (20 years or older) 90961
Dialysis is a treatment that performs the function of healthy kidneys if they're not working properly. It removes waste and excess fluid from your blood. 2-3 physician visits per month are recommended for monitoring your health and adjusting your treatment as needed. This service is available for those aged 20 years and older.
192 services37 patients
Dialysis services, 4 or more physician visits per month (20 years or older) 90960
Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.
147 services33 patients
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.
105 services33 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.
70 services12 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.
33 services17 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.
22 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94533 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
$145.83 typical visit price
range $65.02 – $191.95
Typical copayment $36.45 (range $16.25 – $47.98)
Most-billed visit code 99204
Established Patient
$113.05 typical visit price
range $21.86 – $157.69
Typical copayment $28.26 (range $5.46 – $39.42)
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.

Reported Quality Measures

Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
53%314 patients1/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
94%177 patients4/55-star benchmark: 100%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
65%139 patients3/55-star benchmark: 97%
Provide Patient Access
For at least one unique patient seen by the MIPS eligible clinician: (1) The patient (or the patient authorized representative) is provided timely access to view online, download, and transmit his or her health information; and (2) The MIPS eligible clinician…
14%94 patients1/55-star benchmark: 100%
Use of High-Risk Medications in the Elderly
Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication.
Lower rates are better for this measure.
Patients 2+: 0% · 91 patients
1%91 patients4/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 4

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$16.03 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
2 suppliers16 claims16 services$80.99 avg. paid by Medicare
Tacrolimus, immediate release, oral, 1 mg J7507
Treatment-Treatment - Miscellaneous · category RX029N
2 suppliers14 claims539 services$0.29 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
3 suppliers14 claims14 services$17.58 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 3

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

JAYESH J. PATEL M.D. INC
Clinic/Center (Primary Care)
1525 WEBSTER ST STE A
FAIRFIELD, CA 94533
Solano County (707) 423-2506
MS. MARGARET LINDA DIFELICE PA C
Physician Assistant (Medical)
1525 WEBSTER ST STE A
FAIRFIELD, CA 94533
Solano County (707) 423-2506
GURINDER S. DHILLON M D PROFESSIONAL CORPORATION
Specialist
1525 WEBSTER ST STE A
FAIRFIELD, CA 94533
Solano County (707) 423-2506

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 Steven Tolkan's NPI number?

The NPI number for Steven Tolkan is 1871554766. It was assigned to this individual provider in the NPPES registry on March 30, 2006.

Where is Steven Tolkan located?

Steven Tolkan practices at 1525 Webster St Ste A, Fairfield, CA 94533. The listed phone number is (707) 423-2506.

What is Steven Tolkan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Steven Tolkan enrolled in Medicare?

Yes. Steven Tolkan is registered in the Medicare PECOS enrollment system.

What insurance does Steven Tolkan accept?

Health plans from Blue Cross and Blue Shield of Texas list Steven Tolkan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Steven Tolkan was last updated on April 24, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.