Dr. Robert F. Onder Jr., MD

  • Saint Louis, MO
  • Allergy physician
NPI1164533295PAC ID9931376878
Medicare services, 2024
7,303
Medicare patients, 2024
155
Part D claims, 2024
657
Publications
2
Industry payments
$6,995
Practice address
711 Old Ballas Rd Suite 100 Suite 100, Creve Coeur, MO 63141-7068
Practice phone
Call (314) 569-0510
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

Allergy And Asthma Consultants

Medical specialty practice · Creve Coeur, Missouri

Find Dr. Onder'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.

View contacts for free

Dr. Robert F. Onder Jr. is an allergy physician in Saint Louis, Missouri

Dr. Onder practices at Allergy And Asthma Consultants in Creve Coeur, Missouri.

Dr. Onder's NPI, 1164533295, was assigned on August 31, 2006. Dr. Onder graduated from WashU Medicine in 1987. Dr. Onder holds Missouri license R9H42.

NPI and contact details
Medicare PAC ID
9931376878
NPI enumeration date
August 31, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(314) 569-0510
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
65
Medical school graduation
1987

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Robert F. Onder Jr. practices at Allergy and Asthma Consultants in Creve Coeur, Missouri

Dr. Onder's primary practice is Allergy and Asthma Consultants, at 711 Old Ballas Rd Suite 100 Suite 100, Creve Coeur, MO 63141-7068. The practice phone is (314) 569-0510.

  • Allergy and Asthma Consultants
    711 Old Ballas Rd Suite 100 Suite 100, Creve Coeur, MO 63141-7068Phone(314) 569-0510

Source: Dmand AI Affiliation Data

Dr. Robert F. Onder Jr. is affiliated with 1 site of care and 1 medical group

Dr. Onder's primary practice is Allergy And Asthma Consultants in Creve Coeur, Missouri. The medical group on file is Allergy and Asthma Consultants.

Allergy And Asthma ConsultantsMedical specialty practice · Creve Coeur, MissouriPrimary
Allergy and Asthma ConsultantsRheumatology, allergy and immunology group, Creve Coeur, MO

Source: Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Robert F. Onder Jr.'s practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Onder practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Allergy And Asthma ConsultantsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every site where Dr. Onder practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.

Dr. Robert F. Onder Jr. is one of 16 allergy physicians in Missouri

Allergy is Dr. Onder's primary specialty in the NPI Registry, under taxonomy code 207KA0200X. Dr. Onder is board certified in allergy & immunology by the American Board of Allergy and Immunology. Dr. Onder is licensed in Missouri.

Specialties and state licenses

  • Allergy, MissouriPrimaryLicense R9H42 · 1988 to 2026 · taxonomy 207KA0200X

Clinical focus

Dmand AI lists acute sinusitis, asthma, chronic nasal allergies, chronic sinusitis, hives and upper respiratory infection (URI) among the conditions Dr. Onder treats.

Allergy physicians near Dr. Onder

Counts of allergy physicians with a Dmand AI profile, by place and practice. Each opens the list.

16allergy physicians in Missouri
6allergy physicians in Saint Louis

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Robert F. Onder Jr. billed Medicare for 7,303 services in 2024

CMS data shows 7,303 Medicare services from Dr. Onder across 6 procedure codes in 2024, for 155 Medicare patients. Medicare paid $66,468 for them. Every service was in an office.

Medicare services, 20247,303
Medicare patients155
Paid by Medicare$66,468
Procedure codes6

Dr. Onder's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Tests and treatments
2023: 11,2402024: 7,25235%
Office and hospital visits
2023: 2172024: 5176%
Other services
2023: 162024: 0100%

Dr. Onder compared with the Missouri median for allergy physicians, 2024

  • Dr. Onder
  • Missouri median
Medicare services
7,303vs 1,1636.3 times
Medicare patients
155vs 662.3 times
Part D claims
545vs 1703.2 times

Medians across 16 allergy physicians in Missouri with Dmand AI profiles that report each measure.

Dr. Onder's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Onder

Need commercial claims for Dr. Onder?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Onder and other allergy physicians in Missouri.

Book a meeting

Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Robert F. Onder Jr. treated 155 Medicare patients in 2024, average age 72

CMS counts 155 Medicare patients who saw Dr. Onder in 2024. The largest group is 65 to 74, with 85 patients. 73% of them have high cholesterol, and 67% have high blood pressure. 8% are also on Medicaid. Their average risk score is 0.89, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Onder's median patient age at 55, with 67% women.

Medicare patients, 2024155
Average age72
Average risk score0.89
Also on Medicaid8%

Dr. Onder's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Onder's Medicare patients by sex, 2024

  • Women10467%
  • Men5133%

Chronic conditions among Dr. Onder's Medicare patients, 2024

  1. High cholesterol73%
  2. High blood pressure67%
  3. Arthritis54%
  4. Asthma54%
  5. Mood disorders27%
  6. Depression25%
  7. Anxiety24%
  8. Diabetes20%

Share of Medicare patients with each condition. A patient can have several.

Dr. Onder's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 55

Patient panel by sex, all payers

  • Women67%
  • Men33%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Robert F. Onder Jr. wrote 657 Medicare Part D claims in 2024

In 2024, Dr. Onder wrote 657 Medicare Part D claims for 164 patients. 64% of them were for generic drugs. CMS names the drug for 545 of them, across 14 drugs with 11 or more claims each, at $77,301 in total drug cost. In 2023, CMS named 837 claims across 21 drugs.

Part D claims, 2024657
Drugs named by CMS14
Total drug cost$77,301
Part D patients164

Dr. Onder's Part D claims by kind of drug, 2024

  • Generic418 claims64%
  • Brand-name239 claims36%

Dr. Onder'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. Onder's Part D claims, 2024

  • Antibiotics2%11 of 657 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: 8372024: 54535%

Drugs named by CMS: 14 in 2024, 21 in 2023.

See all prescribing by Dr. Onder

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. Robert F. Onder Jr. takes part in Medicare

Dr. Onder 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)

For MedTech and pharma teams

Find allergy physicians like Dr. Onder by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

Dr. Robert F. Onder Jr. has 2 publications on record

Dmand AI links 2 papers to Dr. Onder in 2017. Dr. Onder's most frequent co-author is Thomas B. Casale, MD.

Papers2

Dr. Onder's most frequent co-authors

Recent publications by Dr. Onder

See all 2 publications and co-authors

See who Dr. Onder researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Onder works with, so you can find a warm path to the right allergy physicians.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Robert F. Onder Jr. received $6,995 in industry payments from 2016 to 2025

CMS Open Payments shows 265 general payments to Dr. Onder from 24 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 68% of the total. AstraZeneca Pharmaceuticals LP paid the most, $1,771. It also lists 17 research payments totaling $54,282 from 2016 to 2017.

General payments to Dr. Onder by program year, 2016 to 2025

General payments to Dr. Onder by kind, 2016 to 2025

$7Kin total
  • Food and beverage$4,72268%
  • Travel and lodging$1,63123%
  • Speaker and faculty fees$5007%
  • Education$1422%

Companies that paid Dr. Onder the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Onder

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Robert F. Onder Jr. has 1 award and honors on record

Dmand AI lists 1 award for Dr. Onder, most recently CMS Stage 1 EHR in 2012.

Awards and honors for Dr. Onder

  1. 2012
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Robert F. Onder Jr. graduated from WashU Medicine

Dr. Onder graduated from WashU Medicine in 1987. Dr. Onder is a member of AAAAI.

  1. Medical schoolWashU Medicine
  2. Board certified in allergy & immunologyAmerican Board of Allergy and Immunology

Source: Dmand AI Professional Profile Data

Dr. Robert F. Onder Jr. accepts plans from 10 insurance carriers

Dr. Onder is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Cigna. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • Cigna
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Humana
  • Regence Health Plans
  • Arkansas Blue Cross and Blue Shield
  • +2 more carriersWith a free account

Plan types Dr. Onder accepts, by number of carriers

  1. Medicare9
  2. PPO8
  3. HMO3
  4. POS2
  5. EPO1

Source: Dmand AI Insurance Network Data

Sources for Dr. Robert F. Onder Jr.'s profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Robert F. Onder Jr.

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. Robert F. Onder Jr.'s NPI number?

Dr. Robert F. Onder Jr.'s NPI number is 1164533295. It was assigned on August 31, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Robert F. Onder Jr.?

Dr. Robert F. Onder Jr. is an allergy physician in Saint Louis, Missouri. The primary specialty in the NPI Registry is Allergy Physician (taxonomy code 207KA0200X).

Where does Dr. Robert F. Onder Jr. practice?

Dr. Onder practices at 711 Old Ballas Rd Suite 100 Suite 100, Creve Coeur, MO 63141-7068. Dr. Onder's primary practice is Allergy And Asthma Consultants in Creve Coeur, Missouri.

What is Dr. Robert F. Onder Jr.'s office phone number?

The practice phone on file for Dr. Onder is (314) 569-0510.

What is Dr. Robert F. Onder Jr.'s medical license number?

Dr. Onder holds Missouri license R9H42.

What medical group is Dr. Robert F. Onder Jr. part of?

Dr. Onder is linked to Allergy and Asthma Consultants.

Does Dr. Robert F. Onder Jr. accept Medicare?

Yes. CMS data shows Dr. Onder billed Medicare for 7,303 services in 2024, and Dr. Onder accepts Medicare assignment.

How many Medicare patients does Dr. Robert F. Onder Jr. see?

CMS counts 155 Medicare patients who saw Dr. Onder in 2024, with an average age of 72.

Is Dr. Robert F. Onder Jr. board certified?

Yes. Dr. Onder is board certified in allergy & immunology by the American Board of Allergy and Immunology.

What services does Dr. Robert F. Onder Jr. bill to Medicare?

In 2024, Dr. Onder's most billed Medicare services were allergy test or treatment (95165), allergy test or treatment (95117) and infusion or chemotherapy administration (96372).

Show 7 more questionsShow fewer questions

Where did Dr. Robert F. Onder Jr. go to medical school?

Dr. Onder graduated from WashU Medicine in 1987.

What drugs does Dr. Robert F. Onder Jr. prescribe most?

In 2024 Medicare Part D data, Dr. Onder's most prescribed drugs by claims were Montelukast Sodium, Albuterol Sulfate Hfa and Fluticasone Propionate.

Has Dr. Robert F. Onder Jr. received payments from drug or device companies?

CMS Open Payments shows $6,995 in general payments to Dr. Onder from 24 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.

How long has Dr. Robert F. Onder Jr. been practicing?

Dr. Onder graduated from medical school in 1987, 39 years ago.

Does Dr. Robert F. Onder Jr. do research?

Dmand AI links 2 publications to Dr. Onder.

Who does Dr. Robert F. Onder Jr. publish with?

Dr. Onder's most frequent co-authors are Thomas B. Casale, MD (1 shared paper).

What insurance does Dr. Robert F. Onder Jr. accept?

Dr. Onder is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Cigna. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

Selling to allergy practices?

See allergy physicians in Missouri by site of care and group

Find the practices, groups and hospitals they work with, and the right people to contact at each.

  • 30 days free
  • Self-serve
  • No credit card

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)