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DR. NATHAN S. JOHNSTON
NPI 1619232113
Psychiatry & Neurology - Psychiatry in San Antonio, TX

Active since July 10, 2012PECOS EnrolledAccepts Medicare Assignment
23119 W INTERSTATE 10 BLDG 7, SAN ANTONIO, TX 78257(210) 994-6336(210) 994-6441 Get Directions Write a Review

NPPES record last updated: February 3, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Feb 3, 2026, Feb 16, 2023 (2 updates tracked since 2023).

About Dr. Nathan S. Johnston NPPES

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

DR. NATHAN S. JOHNSTON (NPI 1619232113) is an individual psychiatry provider in San Antonio, Texas, licensed in Texas (Q6755) and active in the NPI registry since July 2012. He is enrolled in Medicare PECOS and is a graduate of Other (2012).

NPPES Registry Identity

NPI1619232113
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. NATHAN S. JOHNSTON
Location Address23119 W INTERSTATE 10 BLDG 7San Antonio, TX 78257-1767
Mailing Address23119 W Interstate 10 Bldg 7San Antonio, TX 78257-1767 · (210) 994-6336 · Fax (210) 994-6441
Phone(210) 994-6336
Fax(210) 994-6441
Sole ProprietorNo
Medical School CMSOtherGraduated 2012
Enumeration DateJuly 10, 2012
Last NPPES UpdateFebruary 3, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 3, 2026
✔ NPI 1619232113 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Licenses✔ Licensed in TX · Q6755✔ Licensed in WA · OP61563295
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.
23119 W INTERSTATE 10 BLDG 7, San Antonio, TX 78257
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.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. Nathan S. Johnston 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 ID7911283304
PECOS Enrollment IDI20200512000791, I20250210002983
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 8

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.

Treatment using magnetic field to stimulate nerve cells in brain, subsequent delivery and management 90868
This treatment involves using a magnetic field to activate nerve cells in the brain. It's a non-invasive procedure designed to manage conditions like depression. The magnetic field is precisely targeted to stimulate specific areas of the brain to improve symptoms.
326 services15 patients
Office or other outpatient visit for the evaluation and management of an established patient that requires the supervision of a physician or other qualified health care professional and provision of greater than 56 mg esketamine nasal self-administration, G2083
This is a routine office visit for existing patients needing physician supervision for esketamine nasal self-administration, a medication used for certain mental health conditions. More than 56 mg will be administered. The visit includes evaluation and ongoing management of your health.
278 services22 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
30 services30 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
28 services12 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.
26 services15 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.
20 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78257 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
$166.88 typical visit price
range $54.84 – $166.88
Typical copayment $41.72 (range $13.71 – $41.72)
Most-billed visit code 99205
Established Patient
$68.55 typical visit price
range $17.52 – $136.11
Typical copayment $17.13 (range $4.38 – $34.02)
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 2

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

PHOENIX MENTAL HEALTH TMS PLLC
Psychiatry & Neurology (Psychiatry)
23119 W INTERSTATE 10 BLDG 7
SAN ANTONIO, TX 78257
Bexar County (210) 994-6336
NICHOLAS PAULOS ZABLAN ESTIOKO PA-C
Physician Assistant
23119 W INTERSTATE 10 BLDG 7
SAN ANTONIO, TX 78257
Bexar County (210) 994-6336

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 Nathan Johnston's NPI number?

The NPI number for Nathan Johnston is 1619232113. It was assigned to this individual provider in the NPPES registry on July 10, 2012.

Where is Nathan Johnston located?

Nathan Johnston practices at 23119 W Interstate 10 Bldg 7, San Antonio, TX 78257. The listed phone number is (210) 994-6336.

What is Nathan Johnston's specialty?

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

Is Nathan Johnston enrolled in Medicare?

Yes. Nathan Johnston 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 Nathan Johnston accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 5 other insurers list Nathan Johnston 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 Nathan Johnston was last updated on February 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.