Dr. Nancy Kay Ostrom, MD

  • Montclair, CA
  • Allergist and immunologist
NPI1437177060
Medicare services, 2018
53
Part D claims, 2019
12
Publications
27
Industry payments
$65,478
Insurance carriers
4
Practice address
4110 Holt Blvd, Montclair, CA 91763
Practice phone
Call (818) 599-8998
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Dignity Adult Day Health Care Center

Montclair, California

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Dr. Nancy Kay Ostrom is an allergist and immunologist in Montclair, California

Dr. Ostrom practices at Dignity Adult Day Health Care Center in Montclair, California.

Dr. Ostrom's NPI, 1437177060, was assigned on July 18, 2006. Dr. Ostrom graduated from Mayo Clinic Alix School of Medicine - Rochester in 1980. Dr. Ostrom holds California license G56048.

NPI and contact details
NPI enumeration date
July 18, 2006
NPI status
Active
Practice phone
(818) 599-8998
Professional email
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Personal email
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Mobile number
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Sex
Female
Medical school graduation
1980

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

Dr. Nancy Kay Ostrom practices at Dignity Adult Day Health Care Center in Montclair, California

Dr. Ostrom's primary practice is Dignity Adult Day Health Care Center, at 4110 Holt Blvd, Montclair, CA 91763 in San Bernardino County. The practice phone is (818) 599-8998.

  • Dignity Adult Day Health Care Center
    4110 Holt Blvd, Montclair, CA 91763 · San Bernardino CountyPhone(818) 599-8998

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Nancy Kay Ostrom is affiliated with 1 site of care

Dr. Ostrom's primary practice is Dignity Adult Day Health Care Center in Montclair, California.

Dignity Adult Day Health Care CenterMontclair, CaliforniaPrimary

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dmand AI tracks the EHR system at Dr. Nancy Kay Ostrom's practice

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

EHR by site
SiteEHR vendor and product
Dignity Adult Day Health Care CenterAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Nancy Kay Ostrom is one of 386 allergists and immunologists in California

Allergy and immunology is Dr. Ostrom's primary specialty in the NPI Registry, under taxonomy code 207K00000X. Dr. Ostrom is board certified in allergy & immunology by the American Board of Allergy and Immunology. Dmand AI has Dr. Ostrom's licenses on file in 2 states: California and Minnesota.

Specialties and state licenses

  • Allergy and immunology, CaliforniaPrimaryLicense G56048 · 1985 to 2026 · taxonomy 207K00000X
  • Minnesota license1981 to 2012

Allergists and immunologists near Dr. Ostrom

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. Nancy Kay Ostrom billed Medicare for 53 services in 2018

CMS data shows 53 Medicare services from Dr. Ostrom across 2 procedure codes in 2018. Medicare paid $3,181 for them. Every service was in an office.

Medicare services, 201853
Paid by Medicare$3,181
Procedure codes2

Dr. Ostrom's Medicare services by type, 2017 to 2018

  • 2017
  • 2018
Office and hospital visits
2017: 452018: 3718%
Tests and treatments
2017: 02018: 16

Dr. Ostrom compared with the California median for allergists and immunologists, 2018

  • Dr. Ostrom
  • California median
Medicare services
53vs 1,84097% below
Part D claims
12vs 25995% below

Medians across 368 allergists and immunologists in California with Dmand AI profiles that report each measure.

Dr. Ostrom's most billed Medicare procedure codes, 2018

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. Ostrom

Need commercial claims for Dr. Ostrom?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ostrom and other allergists and immunologists in California.

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

Dr. Nancy Kay Ostrom's patients have a median age of 19

Across all payers, Dmand AI patient panel data puts Dr. Ostrom's median patient age at 19, with 46% women.

Dr. Ostrom's patients across all payers

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

Patient panel by age, all payers

Median age 19

Patient panel by sex, all payers

  • Women46%
  • Men54%

Source: Dmand AI Patient Panel Data

Dr. Nancy Kay Ostrom wrote 12 Medicare Part D claims in 2019

In 2019, Dr. Ostrom wrote 12 Medicare Part D claims. They cover 1 drug, with $2,552 in total drug cost. In 2018, CMS named 155 claims across 8 drugs.

Part D claims, 201912
Drugs named by CMS1
Total drug cost$2,552

Dr. Ostrom's most prescribed drugs by claims, 2019

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, 2018 to 2019

  • 2018
  • 2019
Claims for drugs CMS names
2018: 1552019: 1292%

Drugs named by CMS: 1 in 2019, 8 in 2018.

See all prescribing by Dr. Ostrom

Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026

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Dr. Nancy Kay Ostrom has 27 publications on record

Dmand AI links 27 papers to Dr. Ostrom, published from 2003 to 2018. 2015 was the busiest year, with 2. The most frequent topics are Asthma, Double-Blind Method and Anti-Asthmatic Agents. Dr. Ostrom has published most often in Allergy Asthma Proc. Dr. Ostrom's most frequent co-authors are Gene L. Colice, MD, Eli Owen Meltzer, MD and Nemr S. Eid, MD.

Papers27
Years published2003 to 2018

Dr. Ostrom's papers by year, 2003 to 2018

Topics Dr. Ostrom writes about most

  • Asthma
  • Double-Blind Method
  • Anti-Asthmatic Agents
  • Asthma, Exercise-Induced
  • Albuterol
  • Acetates
  • Androstadienes
  • Anti-Allergic Agents

Dr. Ostrom's most frequent co-authors

Recent publications by Dr. Ostrom

See all 27 publications and co-authors

See who Dr. Ostrom researches with

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

How network discovery works

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

Dr. Nancy Kay Ostrom received $65,478 in industry payments from 2016 to 2022

CMS Open Payments shows 255 general payments to Dr. Ostrom from 17 drug and device companies from 2016 to 2022. Speaker and faculty fees make up the largest share, 44% of the total. Teva Pharmaceuticals USA, Inc. paid the most, $44,352. It also lists 17 research payments totaling $3,488 from 2016 to 2017.

General payments to Dr. Ostrom by program year, 2016 to 2022

General payments to Dr. Ostrom by kind, 2016 to 2022

$65.5Kin total
  • Speaker and faculty fees$28,50044%
  • Consulting fees$19,33430%
  • Travel and lodging$9,00014%
  • Food and beverage$8,57913%
  • Education$650%

Companies that paid Dr. Ostrom the most, 2016 to 2022

Share is of all general payments to this clinician.

See all payments to Dr. Ostrom

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

Dr. Nancy Kay Ostrom has 6 awards and honors on record

Dmand AI lists 6 awards for Dr. Ostrom, most recently America's Top Doctors in 2014.

Awards and honors for Dr. Ostrom

  1. 2014
    • America's Top Doctors
  2. 2013
    • Top Doctors:San Diego Area
  3. 2012
    • Top Doctors:Southern California
  4. Undated
    • AAAAI Fellow
    • Checkbook Top Doc
    • Super Doc

Source: Dmand AI Professional Profile Data

Dr. Nancy Kay Ostrom graduated from Mayo Clinic Alix School of Medicine - Rochester

Dr. Ostrom graduated from Mayo Clinic Alix School of Medicine - Rochester in 1980. Dr. Ostrom is a member of AAAAI.

  1. Medical schoolMayo Clinic Alix School of Medicine - Rochester
  2. Board certified in allergy & immunologyAmerican Board of Allergy and Immunology
  3. Board certified in pediatricsAmerican Board of Pediatrics

Source: Dmand AI Professional Profile Data

Dr. Nancy Kay Ostrom accepts plans from 4 insurance carriers

Dr. Ostrom is in network with 4 carriers, including Blue Cross Blue Shield of Massachusetts, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.

  • Blue Cross Blue Shield of Massachusetts
  • Blue Cross Blue Shield of Michigan
  • HCSC
  • Regence Health Plans

Plan types Dr. Ostrom accepts, by number of carriers

  1. Medicare4
  2. PPO4

Source: Dmand AI Insurance Network Data

Sources for Dr. Nancy Kay Ostrom'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 phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice 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 Data
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (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. Nancy Kay Ostrom

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. Nancy Kay Ostrom's NPI number?

Dr. Nancy Kay Ostrom's NPI number is 1437177060. It was assigned on July 18, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Nancy Kay Ostrom?

Dr. Nancy Kay Ostrom is an allergist and immunologist in Montclair, California. The primary specialty in the NPI Registry is Allergy & Immunology Physician (taxonomy code 207K00000X).

Where does Dr. Nancy Kay Ostrom practice?

Dr. Ostrom practices at 4110 Holt Blvd, Montclair, CA 91763. Dr. Ostrom's primary practice is Dignity Adult Day Health Care Center in Montclair, California.

What is Dr. Nancy Kay Ostrom's office phone number?

The practice phone on file for Dr. Ostrom is (818) 599-8998.

What is Dr. Nancy Kay Ostrom's medical license number?

Dr. Ostrom holds California license G56048, one of the licenses on file in 2 states.

Which states has Dr. Nancy Kay Ostrom been licensed in?

Dmand AI has state licenses on file for Dr. Ostrom in California (1985 to 2026) and Minnesota (1981 to 2012).

Does Dr. Nancy Kay Ostrom accept Medicare?

Yes. CMS data shows Dr. Ostrom billed Medicare for 53 services in 2018.

Is Dr. Nancy Kay Ostrom board certified?

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

What services does Dr. Nancy Kay Ostrom bill to Medicare?

In 2018, Dr. Ostrom's most billed Medicare services were office visit, established patient (99214) and lung function service (94010).

Where did Dr. Nancy Kay Ostrom go to medical school?

Dr. Ostrom graduated from Mayo Clinic Alix School of Medicine - Rochester in 1980.

Show 6 more questionsShow fewer questions

What drugs does Dr. Nancy Kay Ostrom prescribe most?

In 2019 Medicare Part D data, Dr. Ostrom's most prescribed drugs by claims were Arnuity Ellipta.

Has Dr. Nancy Kay Ostrom received payments from drug or device companies?

CMS Open Payments shows $65,478 in general payments to Dr. Ostrom from 17 companies from 2016 to 2022. The largest total came from Teva Pharmaceuticals USA, Inc.

How long has Dr. Nancy Kay Ostrom been practicing?

Dr. Ostrom graduated from medical school in 1980, 46 years ago.

Does Dr. Nancy Kay Ostrom do research?

Dmand AI links 27 publications to Dr. Ostrom, published from 2003 to 2018.

Who does Dr. Nancy Kay Ostrom publish with?

Dr. Ostrom's most frequent co-authors are Gene L. Colice, MD (5 shared papers), Eli Owen Meltzer, MD (5 shared papers) and Nemr S. Eid, MD (4 shared papers).

What insurance does Dr. Nancy Kay Ostrom accept?

Dr. Ostrom is in network with 4 carriers, including Blue Cross Blue Shield of Massachusetts, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.

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