Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. John J Nemecek , MD

General Practice • Houston, TX

Active NPI 1629150487 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

1415 California St
Houston, TX 770062602

Call 8325485000 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

1415 California St

Houston, TX 770062602

Telephone 8325485000
Organization at the Same NPPES Address or Phone
Legacy Community Health Services, Inc Facility NPI 1679524961

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Legacy Community Health Services, Inc. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Southern Illinois University School Of Medicine

Graduation Year

1981

30-day fills

6,188 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$6,995,534 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $122.27 in 2021

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2021.

Guide: How to read an Open Payments record

Years since graduation

45 years (graduated 1981)

CMS Doctors and Clinicians data list 1981 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2006

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Nemecek has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Nemecek as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Houston and Texas

Billing and prescribing volume is not a quality rating.

Medicare Part D prescriptions

More Part D prescriptions than 85% of clinicians listed under General Practice in Houston, TX (2024, 36 clinicians with data). Median for this group: 577. Middle half: 85 to 2,785.

More Part D prescriptions than 80% of clinicians listed under General Practice in Texas (2024, 221 clinicians with data). Median for this group: 452. Middle half: 78 to 2,858.

Part D drug cost

A higher Part D drug cost than 95% of clinicians listed under General Practice in Houston, TX (2024, 36 clinicians with data). Median for this group: $20,647. Middle half: $2,458 to $392,192.

A higher Part D drug cost than 95% of clinicians listed under General Practice in Texas (2024, 221 clinicians with data). Median for this group: $17,804. Middle half: $993 to $222,529.

133 active clinicians are listed under General Practice with a practice address in Houston, TX (1,066 in Texas).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Houston

6.8% of these 133 clinicians have the CMS telehealth indicator.

30.1% of these 133 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2021), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2021

Program year 2021 (payments made January 1 – December 31, 2021): fewer than 11 records totaling $122.27.

Manufacturer Payment Nature Product Type Amount ($)
ViiV Healthcare Company
Food and Beverage
In-kind items and services
CABENUVA General $122.27

Source: CMS Open Payments, program year 2021, released June 30, 2026.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Biktarvy Bictegrav/Emtricit/Tenofov Ala 794 24,050 $3,101,343.55 90
Atorvastatin Calcium Atorvastatin Calcium 339 21,386 $2,048.95 78
Tivicay Dolutegravir Sodium 297 8,910 $683,706.72 34
Descovy Emtricitabine/Tenofov Alafenam 231 6,930 $497,257.76 27
Genvoya Elviteg/Cob/Emtri/Tenof Alafen 170 5,100 $646,988.47 15
Lisinopril Lisinopril 154 9,900 $674.41 37
Symtuza Darunavir/Cob/Emtri/Tenof Alaf 126 4,020 $618,008.98 15
Prezcobix Darunavir/Cobicistat 119 3,570 $288,687.52 17
Losartan Potassium Losartan Potassium 107 6,150 $523.08 24
Amlodipine Besylate Amlodipine Besylate 106 7,424 $514.51 24
Juluca Dolutegravir/Rilpivirine 92 2,760 $328,078.29 —
Triumeq Abacavir/Dolutegravir/Lamivudi 88 2,640 $320,067.21 11
Hydrochlorothiazide Hydrochlorothiazide 85 5,130 $252.29 21
Ritonavir Ritonavir 82 2,520 $10,735.72 —
Metformin Hcl Metformin Hcl 79 4,660 $497.67 19
Valacyclovir Valacyclovir Hcl 77 3,477 $2,901.77 13
Gabapentin Gabapentin 68 2,220 $1,210.09 —
Tamsulosin Hcl Tamsulosin Hcl 61 3,150 $363.43 13
Isentress Raltegravir Potassium 51 1,530 $106,911.37 —
Zolpidem Tartrate Zolpidem Tartrate 49 1,470 $203.33 —
Escitalopram Oxalate Escitalopram Oxalate 46 1,830 $209.45 —
Levothyroxine Sodium Levothyroxine Sodium 46 3,050 $298.62 11
Pantoprazole Sodium Pantoprazole Sodium 46 2,384 $261.18 12
Trazodone Hcl Trazodone Hcl 43 1,290 $226.70 —
Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim 43 1,611 $179.35 12

(top 25 shown)

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

General Practice Primary Specialty

NUCC Taxonomy Code: 208D00000X

License # reported to NPPES TX G2565

A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.

Contractor

NUCC Taxonomy Code: 171W00000X

License # reported to NPPES TX G2565

A person who contracts to supply certain materials or do certain work for a stipulated sum; esp., one whose business is contracting work in any of the building trades. For purposes of the taxonomy, a person who contracts to complete home repairs or modifications to accommodate a health condition (e.g. wheelchair ramp, kitchen counter lowering).

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Texas Medical Board.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Other Identifier Texas Medical Board License
G2565 (TX)

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - GENERAL PRACTICE

Medicare Enrollment ID

I20041026000060

Enrollment State Jurisdiction

TX

PECOS Control ID

5799746442

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Legacy Community Health Services, Inc

6441 High Star Dr, Houston, TX 770745005

Phone: 8325485300

Legacy Community Health Services, Inc

1415 California St, Houston, TX 770062602

Phone: 8325485100

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

15 listed
April Cockerham , MSN, RN, APRN, FNP-C

Nurse Practitioner - Family

NPI 1093165870

Master of Science in Nursing, Registered Nurse, Advanced Practice Registered Nurse, Family Nurse Practitioner (Certified)

Dr. George Groves , MD

Psychiatry & Neurology - Psychiatry

NPI 1114023223

Doctor of Medicine (M.D.)

Dr. Hamilton Harris , DO

Psychiatry & Neurology - Psychiatry

NPI 1093243081

Doctor of Osteopathic Medicine (D.O.)

Dr. Karachi Igwe , MD, MA

Psychiatry & Neurology - Addiction Psychiatry

NPI 1093247538

Doctor of Medicine (M.D.), Master of Arts

NPI 1033412077

Doctor of Medicine (M.D.)

Dr. Rubina Joseph , MD

Internal Medicine - Infectious Disease

NPI 1104051853

Doctor of Medicine (M.D.)

Career & Practice History

NPI enumerated October 20, 2006.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1629150487
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: October 20, 2006
Last Update: August 18, 2015
Sole Proprietor: No

Other General Practices in Houston

All General Practices in Houston

Mailing Address

Po Box 66308

Houston, TX 772666308

Phone: 8325485000

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.