Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. JAMES D. MOSSON M.D.
NPI 1437135670
Internal Medicine in Sonora, CA

Q: What is James Mosson's NPI number?

The NPI number for James Mosson is 1437135670. It was assigned to this individual provider in the NPPES registry on December 20, 2005.

Q: What is James Mosson's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for James Mosson was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days 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.

Active since December 20, 2005PECOS EnrolledAccepts Medicare Assignment

900 GREENLEY RD, SUITE 922, SONORA, CA 95370(209) 536-3738(209) 536-3565 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Dr. James D. Mosson M.d. NPPES

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

DR. JAMES D. MOSSON M.D. (NPI 1437135670) is an individual internal medicine provider in Sonora, California, licensed in California (G25381) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of University Of California, Davis School Of Medicine (1972).

NPPES Registry Identity

NPI1437135670

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. JAMES D. MOSSONCredential: M.D.

Location Address900 GREENLEY RD, SUITE 922Sonora, CA 95370-5287

Mailing Address900 Greenley Rd, Suite 922Sonora, CA 95370-5287 · (209) 536-3738 · Fax (209) 536-3565

Phone(209) 536-3738

Fax(209) 536-3565

Sole ProprietorNo

Medical School CMSUniversity Of California, Davis School Of MedicineGraduated 1972

Enumeration DateDecember 20, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1437135670 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 · G25381

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.

900 GREENLEY RD, Sonora, CA 95370

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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. James D. Mosson 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 ID5496764276

PECOS Enrollment IDI20060406000592

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 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.

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

26 services23 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

24 services21 patients

Detection test by immunoassay with direct visual observation for influenza virus 87804

This is a test that identifies the influenza virus in your body. It works by using an immunoassay, a method that detects the presence of the virus through an immune response. The results are directly observable, making it a quick and efficient way to diagnose flu.

15 services15 patients

Detection test by immunoassay with direct visual observation for respiratory syncytial virus 87807

This is a test to identify the respiratory syncytial virus, a common cause of lung and respiratory tract infections. It uses immunoassay, a method that detects the virus through a reaction between the virus and specific antibodies. The result is visually observed.

14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95370 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

$133.94 typical visit price

range $58.87 – $176.60

Typical copayment $33.48 (range $14.71 – $44.15)

Most-billed visit code 99204

Established Patient

$103.36 typical visit price

range $19.28 – $144.60

Typical copayment $25.84 (range $4.82 – $36.15)

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

Breast Cancer Screening

50%139 patients3/55-star benchmark: 93%

Cervical Cancer Screening

49%103 patients3/55-star benchmark: 98%

Closing the Referral Loop: Receipt of Specialist Report

38%238 patients2/55-star benchmark: 87%

Controlling High Blood Pressure

35%285 patients2/55-star benchmark: 91%

Diabetes: Eye Exam

6%77 patients1/55-star benchmark: 100%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

43%77 patients3/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

57%1,997 patients2/55-star benchmark: 100%

Falls: Screening for Future Fall Risk

0%350 patients1/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

17%565 patients1/55-star benchmark: 98%

Preventive Care and Screening: Screening for Depression and Follow-Up Plan

0%459 patients1/55-star benchmark: 97%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients combinedPopulations: 29% · 526 patients

Patients screened: 33% · 526 patients

37%27 patients2/55-star benchmark: 100%

Statin Therapy for the Prevention and Treatment of Cardiovascular Disease

80%158 patients4/55-star benchmark: 91%

Use of High-Risk Medications in Older Adults

Lower rates are better for this measure.

Patients appropriateDiagnosis: 6% · 329 patients

Patients totalRate: 13% · 364 patients

12%364 patients3/55-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.

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

DME-Other DME · category DE017N

7 suppliers40 claims73 services$5.64 avg. paid by Medicare

Residual limb support system for wheelchair, any type E1020

DME-Wheelchairs · category DD021N

1 supplier11 claims11 services$14.85 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

5 suppliers39 claims39 services$189.68 avg. paid by Medicare

Power wheelchair, group 2 standard, captains chair, patient weight capacity up to and including 300 pounds K0823

DME-Wheelchairs · category DD009N

1 supplier11 claims11 services$212.78 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 16

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

SONORA COMMUNITY HOSPITAL

Internal Medicine (Cardiovascular Disease)

900 GREENLEY RD, SUITE 911
SONORA, CA 95370

Tuolumne County (209) 532-0511

MR. EDMAN FUENTES PAC

Physician Assistant (Surgical)

900 GREENLEY RD, SUITE 914
SONORA, CA 95370

Tuolumne County (925) 469-6274

DR. KEVIN A. ORCA PHARM.D.

Pharmacist

900 GREENLEY RD, STE 912
SONORA, CA 95370

Tuolumne County (209) 536-3700

JAMES LEONARD COMAZZI M.D.

Specialist

900 GREENLEY RD, SUITE 911
SONORA, CA 95370

Tuolumne County (209) 532-0511

MRS. JOANNE LINDA RIOS CNS

Clinical Nurse Specialist

900 GREENLEY RD, SUITE 905
SONORA, CA 95370

Tuolumne County (209) 536-3720

SHALOM EUGENE MARGOLIS M.D.

Specialist

900 GREENLEY RD, SUITE 911
SONORA, CA 95370

Tuolumne County (209) 532-0511

MEREDITH R MCBRIDE MD

Surgery (Vascular Surgery)

900 GREENLEY RD, SUITE 923
SONORA, CA 95370

Tuolumne County (209) 536-5090

WILLIAM G STONE MD

Surgery

900 GREENLEY RD
SONORA, CA 95370

Tuolumne County (605) 593-3688

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 James Mosson's NPI number?

The NPI number for James Mosson is 1437135670. It was assigned to this individual provider in the NPPES registry on December 20, 2005.

Where is James Mosson located?

James Mosson practices at 900 Greenley Rd Suite 922, Sonora, CA 95370. The listed phone number is (209) 536-3738.

What is James Mosson's specialty?

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

Is James Mosson enrolled in Medicare?

Yes. James Mosson 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 James Mosson was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days 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.