Antibodies, ViralAntibody FormationDouble-Blind Method
Dr. John A. Fling, MD
NPI1487619995
- Medicare services, 2019
- 17
- Part D claims, 2020
- 77
- Publications
- 10
- Industry payments
- $2,573
- Affiliated sites
- 1
- Practice address
- 855 Montgomery Street, Fort Worth, TX 76107-2553
- Practice phone
- Call (817) 735-2363
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Raheela Hafeez
Pediatric practice · Fort Worth, Texas
Find Dr. Fling's professional email, personal email and mobile number
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Dr. John A. Fling is an allergy physician in Fort Worth, Texas
Dr. Fling practices at Raheela Hafeez in Fort Worth, Texas.
Dr. Fling's NPI, 1487619995, was assigned on April 18, 2006. Dr. Fling graduated from Joe R. & Teresa Lozano Long School of Medicine in 1978. Dr. Fling's Texas license number on file is F1545.
NPI and contact details
- NPI
- 1487619995NPI Registry (opens in a new tab)
- NPI enumeration date
- April 18, 2006
- NPI status
- Active
- Practice phone
- (817) 735-2363
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John A. Fling practices at Raheela Hafeez in Fort Worth, Texas
Dr. Fling's primary practice is Raheela Hafeez, at 855 Montgomery Street, Fort Worth, TX 76107-2553. The practice phone is (817) 735-2363.
- Raheela Hafeez855 Montgomery Street, Fort Worth, TX 76107-2553Phone(817) 735-2363
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John A. Fling is affiliated with 1 site of care and 1 medical group
Dr. Fling's primary practice is Raheela Hafeez in Fort Worth, Texas. Dmand AI also links Dr. Fling to 1 medical group, named with a free account.
Raheela HafeezPrimary
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. John A. Fling's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fling practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Raheela Hafeez | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John A. Fling is one of 71 allergy physicians in Texas
Allergy is Dr. Fling's primary specialty in the NPI Registry, under taxonomy code 207KA0200X. Dr. Fling is board certified in allergy & immunology by the American Board of Allergy and Immunology. Dr. Fling has a license on file in Texas.
Specialties and state licenses
- Allergy, TexasPrimary
Allergy physicians near Dr. Fling
Counts of allergy physicians with a Dmand AI profile, by place and practice. Each opens the list.
71allergy physicians in Texas
4allergy physicians in Fort Worth
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John A. Fling billed Medicare for 17 services in 2019
CMS data shows 17 Medicare services from Dr. Fling across 1 procedure code in 2019, all of them office visits. Medicare paid $953 for them. Every service was in an office.
Medicare services, 201917
Paid by Medicare$953
Procedure codes1
Dr. Fling's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 192019: 1711%
- Tests and treatments
- 2018: 4982019: 0100%
Dr. Fling compared with the Texas median for allergy physicians, 2019
- Dr. Fling
- Texas median
- Medicare services
- 17vs 2,40099% below
- Part D claims
- 77vs 36379% below
Medians across 67 allergy physicians in Texas with Dmand AI profiles that report each measure.
Dr. Fling's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Fling?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Fling and other allergy physicians in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John A. Fling's patients have a median age of 20
Across all payers, Dmand AI patient panel data puts Dr. Fling's median patient age at 20, with 52% women.
Dr. Fling's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 20
Patient panel by sex, all payers
- Women52%
- Men48%
Source: Dmand AI Patient Panel Data
Dr. John A. Fling wrote 77 Medicare Part D claims in 2020
In 2020, Dr. Fling wrote 77 Medicare Part D claims. Every claim was for a generic drug. They cover 4 drugs, with $2,171 in total drug cost. In 2019, CMS named 84 claims across 5 drugs.
Part D claims, 202077
Drugs named by CMS4
Total drug cost$2,171
Dr. Fling's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 842020: 778%
Drugs named by CMS: 4 in 2020, 5 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. John A. Fling has 10 publications on record
Dmand AI links 10 papers to Dr. Fling in 2013. The most frequent topics are Antibodies, Viral, Double-Blind Method and Fever. Dr. Fling has published most often in J Allergy Clin Immunol. Dr. Fling's most frequent co-authors are Michael J. Reid, MD, Nicola P. Klein, MD and Kwabena O. Sarpong, MD.
Papers10
Topics Dr. Fling writes about most
- Antibodies, Viral
- Double-Blind Method
- Fever
- Immunoglobulin G
- Influenza A Virus, H1N1 Subtype
- Influenza, Human
- Influenza Vaccines
- Military Personnel
Dr. Fling's most frequent co-authors
- Michael J. Reid, MD4 shared papers
- Nicola P. Klein, MD2 shared papers
- Kwabena O. Sarpong, MD2 shared papers
Recent publications by Dr. Fling
Pediatr Infect Dis J
Antibodies, BacterialAntibodies, ViralDiphtheria-Tetanus-Pertussis Vaccine
Blood Chemical AnalysisEvaluation Studies as TopicOsmolar Concentration
J Allergy Clin Immunol
AllergensAntibody SpecificityDesensitization, Immunologic
J Allergy Clin Immunol
Antibodies, Anti-IdiotypicAsthmaCalifornia
See who Dr. Fling researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Fling works with, so you can find a warm path to the right allergy physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John A. Fling received $2,573 in industry payments from 2016 to 2018
CMS Open Payments shows 11 general payments to Dr. Fling from 5 drug and device companies from 2016 to 2018. Travel and lodging make up the largest share, 66% of the total. Seqirus USA Inc paid the most, $1,533. It also lists 1 research payment totaling $521 in 2016.
General payments to Dr. Fling by program year, 2016 to 2018
General payments to Dr. Fling by kind, 2016 to 2018
$2.6Kin total
- Travel and lodging$1,70866%
- Food and beverage$86534%
Companies that paid Dr. Fling the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John A. Fling has 1 award and honors on record
Dmand AI lists 1 award for Dr. Fling.
Awards and honors for Dr. Fling
- Undated
- Super Doc
Source: Dmand AI Professional Profile Data
Dr. John A. Fling graduated from Joe R. & Teresa Lozano Long School of Medicine
Dr. Fling graduated from Joe R. & Teresa Lozano Long School of Medicine in 1978. Dr. Fling is a member of AAAAI.
- Medical school
- Board certified in allergy & immunology
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. John A. Fling accepts plans from 1 insurance carrier
Dr. Fling is in network with 1 carrier, including Cigna. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Cigna
Plan types Dr. Fling accepts, by number of carriers
- HMO1
- Medicare1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. John A. Fling'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 | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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) |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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 A. Fling
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 A. Fling's NPI number?
Dr. John A. Fling's NPI number is 1487619995. It was assigned on April 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John A. Fling?
Dr. John A. Fling is an allergy physician in Fort Worth, Texas. The primary specialty in the NPI Registry is Allergy Physician (taxonomy code 207KA0200X).
Where does Dr. John A. Fling practice?
Dr. Fling practices at 855 Montgomery Street, Fort Worth, TX 76107-2553. Dr. Fling's primary practice is Raheela Hafeez in Fort Worth, Texas. Dmand AI also links Dr. Fling to 1 medical group.
What is Dr. John A. Fling's office phone number?
The practice phone on file for Dr. Fling is (817) 735-2363.
What is Dr. John A. Fling's medical license number?
Dr. Fling's Texas license number on file is F1545.
Does Dr. John A. Fling accept Medicare?
Yes. CMS data shows Dr. Fling billed Medicare for 17 services in 2019.
Is Dr. John A. Fling board certified?
Yes. Dr. Fling is board certified in allergy & immunology by the American Board of Allergy and Immunology.
What services does Dr. John A. Fling bill to Medicare?
In 2019, Dr. Fling's most billed Medicare services were office visit, established patient (99213).
Where did Dr. John A. Fling go to medical school?
Dr. Fling graduated from Joe R. & Teresa Lozano Long School of Medicine in 1978.
What drugs does Dr. John A. Fling prescribe most?
In 2020 Medicare Part D data, Dr. Fling's most prescribed drugs by claims were Ipratropium Bromide, Azelastine HCl and Montelukast Sodium.
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Has Dr. John A. Fling received payments from drug or device companies?
CMS Open Payments shows $2,573 in general payments to Dr. Fling from 5 companies from 2016 to 2018. The largest total came from Seqirus USA Inc.
How long has Dr. John A. Fling been practicing?
Dr. Fling graduated from medical school in 1978, 48 years ago.
Does Dr. John A. Fling do research?
Dmand AI links 10 publications to Dr. Fling.
Who does Dr. John A. Fling publish with?
Dr. Fling's most frequent co-authors are Michael J. Reid, MD (4 shared papers), Nicola P. Klein, MD (2 shared papers) and Kwabena O. Sarpong, MD (2 shared papers).
What insurance does Dr. John A. Fling accept?
Dr. Fling is in network with 1 carrier, including Cigna. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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