Dr. Holly Conway Brown, MD
- Medicare services, 2024
- 5,037
- Medicare patients, 2024
- 189
- Part D claims, 2024
- 1,311
- Hospital affiliations
- 1
- Industry payments
- $8,220
- Practice address
- 3500 Mt Vernon SE Rd, Cedar Rapids, IA 52403
- Practice phone
- Call (319) 366-6249
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Allergy Partners of Cedar Rapids
Cedar Rapids, Iowa
Find Dr. Brown'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. Holly Conway Brown is an allergist and immunologist in Cedar Rapids, Iowa
Dr. Brown practices at Allergy Partners of Cedar Rapids in Cedar Rapids, Iowa.
Dr. Brown's NPI, 1851382980, was assigned on October 28, 2005. Dr. Brown graduated from University of Iowa, RJ & L Carver College of Medicine in 1998. Dr. Brown holds Iowa license MD-33765.
- NPI
- 1851382980NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1153339452
- NPI enumeration date
- October 28, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (319) 366-6249
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Holly Conway Brown practices at Allergy Partners of Cedar Rapids in Cedar Rapids, Iowa
Dr. Brown's primary practice is Allergy Partners of Cedar Rapids, at 3500 Mt Vernon SE Rd, Cedar Rapids, IA 52403 in Linn County. The practice phone is (319) 366-6249.
- Allergy Partners of Cedar Rapids3500 Mt Vernon SE Rd, Cedar Rapids, IA 52403 · Linn CountyPhone(319) 366-6249
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Holly Conway Brown is affiliated with 3 sites of care and 1 medical group
Dr. Brown's primary practice is Allergy Partners of Cedar Rapids in Cedar Rapids, Iowa. Dr. Brown is also affiliated with UnityPoint Health - St. Luke's Hospital - Cedar Rapids. The medical group on file is Allergy Partners of Crestview Hills. Dmand AI also links Dr. Brown to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Holly Conway Brown's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Brown practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Allergy Partners of Cedar Rapids | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Holly Conway Brown is one of 25 allergists and immunologists in Iowa
Allergy and immunology is Dr. Brown's primary specialty in the NPI Registry, under taxonomy code 207K00000X. Dr. Brown is licensed in Iowa.
Specialties and state licenses
- Allergy and immunology, IowaPrimary
Allergists and immunologists near Dr. Brown
Counts of allergists and immunologists 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. Holly Conway Brown billed Medicare for 5,037 services in 2024
CMS data shows 5,037 Medicare services from Dr. Brown across 8 procedure codes in 2024, for 189 Medicare patients. Medicare paid $39,592 for them. Every service was in an office.
Dr. Brown's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 4,5412024: 4,8487%
- Office and hospital visits
- 2023: 1902024: 1891%
- Surgery
- 2023: 142024: 0100%
Dr. Brown compared with the Iowa median for allergists and immunologists, 2024
- Dr. Brown
- Iowa median
- Medicare services
- 5,037vs 2,74983% above
- Medicare patients
- 189vs 189Close to median
- Part D claims
- 1,179vs 5632.1 times
Medians across 27 allergists and immunologists in Iowa with Dmand AI profiles that report each measure.
Dr. Brown'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Brown and other allergists and immunologists in Iowa.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Holly Conway Brown treated 189 Medicare patients in 2024, average age 73
CMS counts 189 Medicare patients who saw Dr. Brown in 2024. The largest group is 65 to 74, with 114 patients. 75% of them have high cholesterol, and 68% have high blood pressure. Their average risk score is 0.82, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Brown's median patient age at 36, with 61% women.
Dr. Brown's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Brown's Medicare patients by sex, 2024
- Women13169%
- Men5831%
Chronic conditions among Dr. Brown's Medicare patients, 2024
- High cholesterol75%
- High blood pressure68%
- Arthritis46%
- Asthma40%
- Mood disorders29%
- Depression27%
- Diabetes26%
- Anxiety25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Brown's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 36
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Holly Conway Brown wrote 1,311 Medicare Part D claims in 2024
In 2024, Dr. Brown wrote 1,311 Medicare Part D claims for 211 patients. 72% of them were for generic drugs. CMS names the drug for 1,179 of them, across 24 drugs with 11 or more claims each, at $98,452 in total drug cost. In 2023, CMS named 1,122 claims across 20 drugs.
Dr. Brown's Part D claims by kind of drug, 2024
- Generic944 claims72%
- Brand-name367 claims28%
Dr. Brown'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,1222024: 1,1795%
Drugs named by CMS: 24 in 2024, 20 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. Holly Conway Brown takes part in Medicare
Dr. Brown 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. Holly Conway Brown received $8,220 in industry payments from 2016 to 2025
CMS Open Payments shows 301 general payments to Dr. Brown from 26 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 59% of the total. Teva Pharmaceuticals USA, Inc. paid the most, $3,355.
General payments to Dr. Brown by program year, 2016 to 2025
General payments to Dr. Brown by kind, 2016 to 2025
- Food and beverage$4,81559%
- Speaker and faculty fees$3,20039%
- Education$2052%
Companies that paid Dr. Brown the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Holly Conway Brown graduated from University of Iowa, RJ & L Carver College of Medicine
Dr. Brown graduated from University of Iowa, RJ & L Carver College of Medicine in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Holly Conway Brown'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| 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. Holly Conway Brown
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. Holly Conway Brown's NPI number?
Dr. Holly Conway Brown's NPI number is 1851382980. It was assigned on October 28, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Holly Conway Brown?
Dr. Holly Conway Brown is an allergist and immunologist in Cedar Rapids, Iowa. The primary specialty in the NPI Registry is Allergy & Immunology Physician (taxonomy code 207K00000X).
Where does Dr. Holly Conway Brown practice?
Dr. Brown practices at 3500 Mt Vernon SE Rd, Cedar Rapids, IA 52403. Dr. Brown's primary practice is Allergy Partners of Cedar Rapids in Cedar Rapids, Iowa. Dmand AI also links Dr. Brown to 1 group practice or clinic.
What is Dr. Holly Conway Brown's office phone number?
The practice phone on file for Dr. Brown is (319) 366-6249.
What is Dr. Holly Conway Brown's medical license number?
Dr. Brown holds Iowa license MD-33765.
Which hospitals is Dr. Holly Conway Brown affiliated with?
Dr. Brown is affiliated with UnityPoint Health - St. Luke's Hospital - Cedar Rapids.
What medical group is Dr. Holly Conway Brown part of?
Dr. Brown is linked to Allergy Partners of Crestview Hills.
Does Dr. Holly Conway Brown accept Medicare?
Yes. CMS data shows Dr. Brown billed Medicare for 5,037 services in 2024, and Dr. Brown accepts Medicare assignment.
How many Medicare patients does Dr. Holly Conway Brown see?
CMS counts 189 Medicare patients who saw Dr. Brown in 2024, with an average age of 73.
What services does Dr. Holly Conway Brown bill to Medicare?
In 2024, Dr. Brown's most billed Medicare services were allergy test or treatment (95004), allergy test or treatment (95165) and allergy test or treatment (95117).
Show 4 more questionsShow fewer questions
Where did Dr. Holly Conway Brown go to medical school?
Dr. Brown graduated from University of Iowa, RJ & L Carver College of Medicine in 1998.
What drugs does Dr. Holly Conway Brown prescribe most?
In 2024 Medicare Part D data, Dr. Brown's most prescribed drugs by claims were Montelukast Sodium, Pantoprazole Sodium and Azelastine HCl.
Has Dr. Holly Conway Brown received payments from drug or device companies?
CMS Open Payments shows $8,220 in general payments to Dr. Brown from 26 companies from 2016 to 2025. The largest total came from Teva Pharmaceuticals USA, Inc.
How long has Dr. Holly Conway Brown been practicing?
Dr. Brown graduated from medical school in 1998, 28 years ago.
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