DR. WILLIAM JAMES GREENE M.D.
NPI 1396189791
Psychiatry & Neurology - Psychiatry in Modesto, CA

Active since April 29, 2013PECOS EnrolledAccepts Medicare Assignment
1501 CLAUS RD, MODESTO, CA 95355(209) 579-5628 Get Directions Write a Review

NPPES record last updated: April 9, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 9, 2025, Apr 2, 2025, Feb 12, 2025 and 3 more (6 updates tracked since 2016).

About Dr. William James Greene M.d. NPPES

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

DR. WILLIAM JAMES GREENE M.D. (NPI 1396189791) is an individual psychiatry provider in Modesto, California, licensed in California (A149842) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Other (2013).

NPPES Registry Identity

NPI1396189791
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. WILLIAM JAMES GREENECredential: M.D.
Location Address1501 CLAUS RDModesto, CA 95355-9711
Mailing Address220 Standiford Ave Ste FModesto, CA 95350-1159 · (209) 579-5628 · Fax (209) 579-5637
Sole ProprietorYes
Medical School CMSOtherGraduated 2013
Enumeration DateApril 29, 2013
Last NPPES UpdateApril 9, 20256 updates tracked since enumeration
NPPES CertifiedApril 9, 2025
NPI 1396189791 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Licenses Licensed in CA · A149842 Licensed in MT · MED-PHYS-LIC-145711
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X · License MD221600 (OR)
1501 CLAUS RD, Modesto, CA 95355

Secondary Practice Locations 3

Location 12801 N Gantenbein AvePortland, OR 97227-1623 · Phone (503) 413-8949
Location 22211 NE 139th StVancouver, WA 98686-2742 · Phone (503) 413-8949
Location 3915 Highland BlvdBozeman, MT 59715-6902 · Phone (406) 414-5000

Accepted Insurance

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. William James Greene 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 ID5092004788
PECOS Enrollment IDI20171218002861
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.

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
384 services46 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
45 services38 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
43 services38 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95355 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
$176.60 typical visit price
range $58.87 – $176.60
Typical copayment $44.15 (range $14.71 – $44.15)
Most-billed visit code 99205
Established Patient
$73.16 typical visit price
range $19.28 – $144.60
Typical copayment $18.29 (range $4.82 – $36.15)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

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

Psychiatry & Neurology (Psychiatry)
1501 CLAUS RD, DBHC
MODESTO, CA 95355
Psychiatry & Neurology (Psychiatry)
1501 CLAUS RD
MODESTO, CA 95355
Counselor (Professional)
1501 CLAUS RD
MODESTO, CA 95355
Technician
1501 CLAUS RD
MODESTO, CA 95355
Technician, Other
1501 CLAUS RD
MODESTO, CA 95355
Counselor (Addiction (Substance Use Disorder))
1501 CLAUS RD
MODESTO, CA 95355
Counselor (Addiction (Substance Use Disorder))
1501 CLAUS RD
MODESTO, CA 95355
Psychiatry & Neurology (Neurology)
1501 CLAUS RD
MODESTO, CA 95355

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 William Greene's NPI number?

The NPI number for William Greene is 1396189791. It was assigned to this individual provider in the NPPES registry on April 29, 2013.

Where is William Greene located?

William Greene practices at 1501 Claus Rd, Modesto, CA 95355. The listed phone number is (209) 579-5628.

What is William Greene's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is William Greene enrolled in Medicare?

Yes. William Greene 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.

What insurance does William Greene accept?

Health plans from Mountain Health CO-OP list William Greene 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 William Greene was last updated on April 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.