Active NPI 1184682254 Individual Practitioner Male Practitioner

Dr. Robert R Williams , MD

Internal Medicine • Tracy, CA

Professional Overview & Biography Verified Profile Summary

Dr. Robert Williams, MD is a registered healthcare professional specializing in Internal Medicine in Tracy, CA. Practice services are available at 2151 W GRANT LINE RD under active NPI credentials.

Frequently performed procedures and clinical services include established patient outpatient office visit, injection, triamcinolone acetonide, not otherwise specified, 10 mg, administration of influenza virus vaccine. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

2151 W Grant Line Rd

Tracy, CA 953777309

Telephone 2098320535

Associated Practice Facility / Clinic

🏢 Sutter Valley Medical Foundation Facility NPI 1326413154

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Tracy, CA

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 31.5 Yrs

State Avg: 26.6 Yrs

Regional Practice Density

27 Specialists

Practicing in Tracy, CA (18502 Statewide)

Telehealth Adoption Rate

40.7% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

57.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2021)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	52	39	$220.00	$95.46
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	24	23	$323.00	$134.39

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	182	89	$208.00	$78.14
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	180	98	$309.00	$112.69
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	68	15	$7.00	$1.47
G0008 Administration of influenza virus vaccine	39	38	$65.00	$17.66
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	35	30	$414.00	$153.52
90662 Influenza vaccine split virus, preservative free	24	24	$62.88	$60.09
93000 Routine ekg using at least 12 leads including interpretation and report	20	20	$72.00	$18.01
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	15	15	$22.00	$19.58
G0009 Administration of pneumococcal vaccine	14	14	$94.00	$17.59
81003 Automated urinalysis test	14	12	$18.00	$2.23

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	356	120	$208.00	$75.85
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	210	107	$309.00	$111.81
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	43	37	$414.00	$151.67
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	41	19	$72.00	$16.66
81003 Automated urinalysis test	36	18	$18.00	$2.44
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	30	12	$5.25	$1.59
93000 Routine ekg using at least 12 leads including interpretation and report	28	26	$72.00	$17.86
G0008 Administration of influenza virus vaccine	25	25	$63.48	$17.33
G0009 Administration of pneumococcal vaccine	22	22	$94.00	$17.33
90662 Influenza vaccine split virus, preservative free	18	18	$55.00	$53.90
90670 Pneumococcal vaccine for injection into muscle	15	15	$272.00	$209.69

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	318	138	$301.00	$109.05
99213 Established patient office or other outpatient visit, typically 15 minutes	305	115	$202.00	$73.90
81003 Automated urinalysis test	74	29	$17.00	$2.71
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	58	16	$5.11	$1.81
G0008 Administration of influenza virus vaccine	41	39	$27.00	$21.47
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	39	37	$403.00	$149.43
93000 Routine ekg using at least 12 leads including interpretation and report	29	27	$68.26	$17.63
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	29	15	$72.00	$20.47
81002 Urinalysis, manual test	24	17	$15.00	$3.41
90662 Influenza vaccine split virus, preservative free	22	21	$52.00	$50.70
20610 Aspiration and/or injection of fluid from large joint	21	13	$206.00	$65.23
G0009 Administration of pneumococcal vaccine	21	20	$94.00	$21.47
90670 Pneumococcal vaccine for injection into muscle	18	18	$265.00	$196.26
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	12	12	$41.00	$18.65

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	358	134	$197.00	$74.07
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	342	147	$294.00	$109.91
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	200	25	$5.00	$1.80
81003 Automated urinalysis test	94	48	$16.00	$3.02
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	46	23	$72.00	$24.15
G0008 Administration of influenza virus vaccine	42	42	$27.00	$26.46
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	35	31	$393.00	$142.49
90662 Influenza vaccine split virus, preservative free	32	32	$50.00	$47.08
93000 Routine ekg using at least 12 leads including interpretation and report	27	26	$62.00	$17.67
20610 Aspiration and/or injection of fluid from large joint	26	18	$201.00	$68.19
81002 Urinalysis, manual test	18	16	$14.00	$3.43
G0009 Administration of pneumococcal vaccine	17	17	$94.00	$26.83
17000 Destruction of skin growth	16	16	$193.00	$69.86

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License CA G62642

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.

Pediatrics

NUCC Taxonomy Code: 208000000X

State License CA G62642

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

00G626420 (CA)

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

24 Associated Practitioners

Dr. Daisy Jones , DO

Pediatrics

NPI 1083671424

Doctor of Osteopathic Medicine (D.O.)

Dr. Juan Vergara Saavedra , MD

Internal Medicine

NPI 1124295316

Doctor of Medicine (M.D.)

Dr. Megana Roopreddy , MD

Pediatrics

NPI 1134626617

Doctor of Medicine (M.D.)

Dr. Anita Xue , MD

Anesthesiology

NPI 1215203906

Doctor of Medicine (M.D.)

Dr. Khosrow Vakhshouri , MD

Family Medicine

NPI 1215993456

Doctor of Medicine (M.D.)

Dr. Christopher Fossaceca , MD

Anesthesiology

NPI 1295817880

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events

✅

NPI Profile Active February 25, 2011

NPI status registered as active in NPPES database

📍

Updated Practice Location February 25, 2011

Registered at 2151 W GRANT LINE RD, TRACY, CA 953777309 (Tel: 2098320535)

📍

Updated Business Mailing Address February 25, 2011

Registered at 600 COFFEE RD, MODESTO, CA 953554201 (Tel: 2095241211)

👤

Provider Name / Credentials Updated February 25, 2011

Recorded as ROBERT WILLIAMS, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 25, 2011

Internal Medicine (License #G62642 in CA)

🟢

Initial NPI Registration & Enumeration May 01, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1184682254

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: May 01, 2006

Last Update: February 25, 2011

Sole Proprietor: No

Update or Correct Profile

Mailing Address

600 Coffee Rd

Modesto, CA 953554201

Phone: 2095241211

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.