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DR. CLIFFORD JOHN SEWELL M.D.
NPI 1851437123
Internal Medicine in Danville, CA

Active since January 30, 2007PECOS EnrolledAccepts Medicare Assignment
400 EL CERRO BLVD STE 102, DANVILLE, CA 94526(925) 855-3780(925) 855-3785 Get Directions Write a Review

NPPES record last updated: October 1, 2020. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Oct 1, 2020, Sep 25, 2020, Jan 9, 2017 (3 updates tracked since 2017).

About Dr. Clifford John Sewell M.d. NPPES

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

DR. CLIFFORD JOHN SEWELL M.D. (NPI 1851437123) is an individual internal medicine provider in Danville, California, licensed in California (A55442) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, maintains a secondary practice location in San Francisco, and is a graduate of Virginia Commonwealth University, School Of Medicine (1994).

NPPES Registry Identity

NPI1851437123
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. CLIFFORD JOHN SEWELLCredential: M.D.
Location Address400 EL CERRO BLVD STE 102Danville, CA 94526-1731
Mailing Address400 El Cerro Blvd Ste 102Danville, CA 94526-1731 · (925) 855-3780 · Fax (925) 855-3785
Phone(925) 855-3780
Fax(925) 855-3785
Sole ProprietorYes
Medical School CMSVirginia Commonwealth University, School Of MedicineGraduated 1994
Enumeration DateJanuary 30, 2007
Last NPPES UpdateOctober 1, 20203 updates tracked since enumeration
NPPES CertifiedOctober 1, 2020
✔ NPI 1851437123 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 · A55442
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.
400 EL CERRO BLVD STE 102, Danville, CA 94526
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Secondary Practice Location 1

Location 1990 Columbus AveSan Francisco, CA 94133-2310 · Phone (415) 732-7029 · Fax (415) 732-7030

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

Dr. Clifford John Sewell 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 ID6002037967
PECOS Enrollment IDI20210113002285
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 3

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 straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
305 services135 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.
147 services86 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94526 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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
2 suppliers13 claims13 services$14.94 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
4 suppliers17 claims17 services$69.08 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.

CLARET MEDICAL GROUP INC.
Internal Medicine
400 EL CERRO BLVD STE 102
DANVILLE, CA 94526
Contra Costa County (925) 855-3780

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 Clifford Sewell's NPI number?

The NPI number for Clifford Sewell is 1851437123. It was assigned to this individual provider in the NPPES registry on January 30, 2007.

Where is Clifford Sewell located?

Clifford Sewell practices at 400 El Cerro Blvd Ste 102, Danville, CA 94526. The listed phone number is (925) 855-3780.

What is Clifford Sewell's specialty?

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

Is Clifford Sewell enrolled in Medicare?

Yes. Clifford Sewell 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 Clifford Sewell was last updated on October 1, 2020. 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.