STEVEN G JOHNSON M.D
NPI 1265439038
Internal Medicine - Gastroenterology in Salinas, CA

Q: What is Steven Johnson's NPI number?

The NPI number for Steven Johnson is 1265439038. It was assigned to this individual provider in the NPPES registry on July 7, 2005.

Q: What is Steven Johnson's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Steven Johnson was last updated on October 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.

Active since July 07, 2005PECOS EnrolledAccepts Medicare Assignment

9.2/100

CMS Quality Rating

1083 LOS PALOS DR, SALINAS, CA 93901(831) 424-8888(831) 424-8889 Get Directions Write a Review

NPPES record last updated: October 2, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 14, 2022, Feb 3, 2020, Apr 1, 2017 (3 updates tracked since 2017).

On this page

About Steven G Johnson M.d NPPES

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

STEVEN G JOHNSON M.D (NPI 1265439038) is an individual gastroenterology provider in Salinas, California, licensed in California (G33624) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, maintains a secondary practice location in Watsonville, and is a graduate of University Of California, San Francisco School Of Medicine (1972).

NPPES Registry Identity

NPI1265439038

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameSTEVEN G JOHNSONCredential: M.D

Location Address1083 LOS PALOS DRSalinas, CA 93901-3916

Mailing Address1083 Los Palos DrSalinas, CA 93901-3916 · (831) 424-8888 · Fax (831) 424-8889

Phone(831) 424-8888

Fax(831) 424-8889

Sole ProprietorNo

Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 1972

Enumeration DateJuly 7, 2005

Last NPPES UpdateOctober 2, 20253 updates tracked since enumeration

NPPES CertifiedOctober 2, 2025

✔ NPI 1265439038 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CA · G33624

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

1083 LOS PALOS DR, Salinas, CA 93901

Open in Google Maps ↗

Secondary Practice Location 1

Location 1240 Westgate DrWatsonville, CA 95076-2461 · Phone (831) 722-8807 · Fax (831) 722-8809

Other Identifiers 2

Other110039929CA · Railroad Medicare

Other00G336241CA · Medicare Ptan

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Steven G Johnson 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 ID3577634195

PECOS Enrollment IDI20080625000189

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.

Medicare Billing Reassignments

Medicare enrollment records show Steven Johnson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Los Palos Gastroenterology Specialists Inc

Same address

Gastroenterology

1083 LOS PALOS DR
Salinas, CA 93901

Reassigned Medicare billing, California enrollment
4 clinicians in this Medicare group

NPI 1538534946 (831) 424-8888

Los Palos Pathology Lab And Ancillary Services Inc

Same address

Clinic/Center

1083 LOS PALOS DR STE 5
Salinas, CA 93901

Reassigned Medicare billing, California enrollment
4 clinicians in this Medicare group

NPI 1093572539 (831) 800-7887

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 21

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.

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

2,820 services1,157 patients

Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito G0500

Moderate sedation is a method where a physician uses medication to help you relax during a gastrointestinal endoscopy. An independent trained observer will be present to monitor your vital signs and ensure your safety throughout the procedure. It's a common and safe practice.

815 services745 patients

Special stained specimen slides to identify organisms including interpretation and report 88312

This service involves coloring specimen slides in a special way to help identify organisms. The colors make different parts of the organism stand out. Afterward, a detailed interpretation and report on the findings are provided.

748 services520 patients

Bacterial culture for aerobic isolates 87077

A bacterial culture for aerobic isolates is a lab test that helps identify bacteria that thrive in oxygen-rich environments. A sample from the suspected infection site is collected, then placed in a special medium that promotes bacterial growth. After a set period, the lab identifies any bacteria present, aiding in accurate diagnosis and treatment.

586 services421 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

434 services425 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

357 services349 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

313 services305 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.

292 services206 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.

141 services117 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

128 services128 patients

Measurement of liver stiffness 91200

Measurement of liver stiffness is a non-invasive procedure that helps assess the health of your liver. It uses sound waves to detect the hardness of the liver tissue, which can indicate conditions like fibrosis or cirrhosis. It's a simple, painless test that provides valuable information about your liver's health.

119 services105 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

103 services103 patients

Dilation of esophagus 43450

Dilation of the esophagus is a procedure aimed to stretch or open up your esophagus (the tube connecting your mouth to your stomach) when it's narrow. It helps to improve swallowing and alleviate discomfort. It's typically performed using a flexible tube or balloon, under sedation.

81 services78 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

77 services77 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

64 services64 patients

Ultrasound scan of organ tissue for measuring elasticity 76981

An ultrasound scan of organ tissue measures elasticity, or flexibility. This non-invasive procedure uses sound waves to create images of the inside of your body. It helps in assessing the health of various organs by detecting changes in their stiffness or softness.

56 services54 patients

Nuclear medicine study to acquire exhaled breath samples 78267

A nuclear medicine study involves inhaling a harmless radioactive substance. Afterward, you'll exhale into a collection system to capture breath samples. These samples help doctors assess lung function and detect any abnormalities in a non-invasive way.

27 services21 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.

25 services20 patients

Injection beneath lining of large bowel using a flexible endoscope 45381

This procedure involves a flexible tube, called an endoscope, being inserted into the large bowel. A small needle is then passed through the tube to inject medication under the bowel lining. This is typically done to treat inflammation or bleeding.

21 services20 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

20 services19 patients

Imaging of digestive tract done from the inside of the digestive tract 91110

This procedure, known as an endoscopy, involves a small camera being passed into the digestive tract. It helps doctors to see the inside of your digestive system in detail. This can aid in diagnosing conditions or planning treatments. It's generally safe and can provide valuable information.

14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93901 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

$139.84 typical visit price

range $61.69 – $184.30

Typical copayment $34.96 (range $15.42 – $46.07)

Most-billed visit code 99204

Established Patient

$108.04 typical visit price

range $20.34 – $151.02

Typical copayment $27.01 (range $5.08 – $37.75)

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.

9.2/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

Improvement Activities

Cost

30.69

Other Providers at the Same Location NPPES 8

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

DR. VIKRAM RAMESHCHANDRA PATEL MD

Internal Medicine (Gastroenterology)