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Dr. John J. Nemecek, MD
NPI1629150487PAC ID5799746442
- Part D claims, 2024
- 4,892
- Publications
- 1
- Industry payments
- $14,766
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 215 Westheimer, Houston, TX 77006
- Practice phone
- Call (713) 830-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Legacy Community Health - Houston (Westheimer)
FQHC - Main Site · Houston, Texas
Find Dr. Nemecek's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John J. Nemecek is a general practice physician in Houston, Texas
Dr. Nemecek practices at Legacy Community Health - Houston (Westheimer) in Houston, Texas.
Dr. Nemecek's NPI, 1629150487, was assigned on October 20, 2006. Dr. Nemecek graduated from Southern Illinois University School of Medicine in 1981. Dr. Nemecek holds Texas license G2565.
NPI and contact details
- NPI
- 1629150487NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799746442
- NPI enumeration date
- October 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (713) 830-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 71
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John J. Nemecek practices at 2 locations in Houston, Texas
Dr. Nemecek's primary practice is Legacy Community Health - Houston (Westheimer), at 215 Westheimer, Houston, TX 77006 in Harris County. The practice phone is (713) 830-3000. Dr. Nemecek also practices at Legacy Community Health Services, Inc, 1415 California St, Houston, TX 77006.
- Legacy Community Health - Houston (Westheimer)Primary215 Westheimer, Houston, TX 77006 · Harris CountyPhone(713) 830-3000
- Legacy Community Health Services, Inc1415 California St, Houston, TX 77006 · Harris CountyPhone(832) 548-5000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. John J. Nemecek is affiliated with 1 site of care and 1 medical group
Dr. Nemecek's primary practice is Legacy Community Health - Houston (Westheimer) in Houston, Texas. The medical group on file is Legacy Community Health. Dr. Nemecek's employer is on file too: a community health center (fqhc).
Legacy Community Health - Houston (Westheimer)Primary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John J. Nemecek's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nemecek practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Legacy Community Health - Houston (Westheimer) | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John J. Nemecek is one of 800 general practice physicians in Texas
General practice is Dr. Nemecek's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Nemecek is licensed in Texas.
Specialties and state licenses
- General practice, TexasPrimary
General practice physicians near Dr. Nemecek
Counts of general practice physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John J. Nemecek's patients have a median age of 57
Across all payers, Dmand AI patient panel data puts Dr. Nemecek's median patient age at 57, with 15% women.
Dr. Nemecek's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women15%
- Men84%
Source: Dmand AI Patient Panel Data
Dr. John J. Nemecek wrote 4,892 Medicare Part D claims in 2024
In 2024, Dr. Nemecek wrote 4,892 Medicare Part D claims for 228 patients. 53% of them were for generic drugs. CMS names the drug for 4,470 of them, across 75 drugs with 11 or more claims each, at $6,995,534 in total drug cost. In 2023, CMS named 4,513 claims across 76 drugs.
Part D claims, 20244,892
Drugs named by CMS75
Total drug cost$7M
Part D patients228
Dr. Nemecek's Part D claims by kind of drug, 2024
- Generic2,608 claims53%
- Brand-name and other2,284 claims47%
Dr. Nemecek's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Nemecek's Part D claims, 2024
- Opioids0%18 of 4,892 claims
- Antibiotics2%79 of 4,892 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4,5132024: 4,4701%
Drugs named by CMS: 75 in 2024, 76 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. John J. Nemecek takes part in Medicare
Dr. Nemecek accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John J. Nemecek has 1 publication on record
Dmand AI links 1 paper to Dr. Nemecek in 2010. Dr. Nemecek's most frequent co-author is Joseph Clayton Gathe, MD.
Papers1
Dr. Nemecek's most frequent co-authors
Recent publications by Dr. Nemecek
See who Dr. Nemecek researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Nemecek works with, so you can find a warm path to the right general practice physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John J. Nemecek received $14,766 in industry payments from 2016 to 2021
CMS Open Payments shows 46 general payments to Dr. Nemecek from 4 drug and device companies from 2016 to 2021. Consulting fees make up the largest share, 73% of the total. ViiV Healthcare Company paid the most, $10,361.
General payments to Dr. Nemecek by program year, 2016 to 2021
General payments to Dr. Nemecek by kind, 2016 to 2021
$14.8Kin total
- Consulting fees$10,85073%
- Travel and lodging$2,59618%
- Food and beverage$1,2919%
- Education$290%
Companies that paid Dr. Nemecek the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John J. Nemecek graduated from Southern Illinois University School of Medicine
Dr. Nemecek graduated from Southern Illinois University School of Medicine in 1981.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John J. Nemecek's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John J. Nemecek
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John J. Nemecek's NPI number?
Dr. John J. Nemecek's NPI number is 1629150487. It was assigned on October 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John J. Nemecek?
Dr. John J. Nemecek is a general practice physician in Houston, Texas. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. John J. Nemecek practice?
Dr. Nemecek practices at 215 Westheimer, Houston, TX 77006. Dr. Nemecek also practices at 1415 California St, Houston, TX 77006. Dr. Nemecek's primary practice is Legacy Community Health - Houston (Westheimer) in Houston, Texas.
What is Dr. John J. Nemecek's office phone number?
The practice phone on file for Dr. Nemecek is (713) 830-3000.
What is Dr. John J. Nemecek's medical license number?
Dr. Nemecek holds Texas license G2565.
What medical group is Dr. John J. Nemecek part of?
Dr. Nemecek is linked to Legacy Community Health.
Does Dr. John J. Nemecek accept Medicare?
Yes. CMS lists Dr. Nemecek as accepting Medicare assignment.
Where did Dr. John J. Nemecek go to medical school?
Dr. Nemecek graduated from Southern Illinois University School of Medicine in 1981.
What drugs does Dr. John J. Nemecek prescribe most?
In 2024 Medicare Part D data, Dr. Nemecek's most prescribed drugs by claims were Biktarvy, Atorvastatin Calcium and Tivicay.
Has Dr. John J. Nemecek received payments from drug or device companies?
CMS Open Payments shows $14,766 in general payments to Dr. Nemecek from 4 companies from 2016 to 2021. The largest total came from ViiV Healthcare Company.
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How long has Dr. John J. Nemecek been practicing?
Dr. Nemecek graduated from medical school in 1981, 45 years ago.
Does Dr. John J. Nemecek do research?
Dmand AI links 1 publication to Dr. Nemecek.
Who does Dr. John J. Nemecek publish with?
Dr. Nemecek's most frequent co-authors are Joseph Clayton Gathe, MD (1 shared paper).
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