Dr. Christopher John Ollari, MD
- Medicare services, 2024
- 231
- Medicare patients, 2024
- 145
- Part D claims, 2024
- 312
- Hospital affiliations
- 3
- Industry payments
- $39
- Practice address
- 354 Birnie Ave, Springfield, MA 01107
- Practice phone
- Call (413) 794-8484
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Baystate OB/GYN Group Inc
Springfield, Massachusetts
Find Dr. Ollari's professional email, personal email and mobile number
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Dr. Christopher John Ollari is an OB-GYN in Springfield, Massachusetts
Dr. Ollari practices at Baystate OB/GYN Group Inc in Springfield, Massachusetts.
Dr. Ollari's NPI, 1669450326, was assigned on January 4, 2006. Dr. Ollari graduated from University of Massachusetts Medical School in 1996. Dr. Ollari holds Massachusetts license 159547.
- NPI
- 1669450326NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901839919
- NPI enumeration date
- January 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (413) 794-8484
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christopher John Ollari practices at Baystate OB/GYN Group Inc in Springfield, Massachusetts
Dr. Ollari's primary practice is Baystate OB/GYN Group Inc, at 354 Birnie Ave, Springfield, MA 01107 in Hampden County. The practice phone is (413) 794-8484.
- Baystate OB/GYN Group Inc354 Birnie Ave, Springfield, MA 01107 · Hampden CountyPhone(413) 794-8484
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Christopher John Ollari is affiliated with 5 sites of care and 1 medical group
Dr. Ollari's primary practice is Baystate OB/GYN Group Inc in Springfield, Massachusetts. Dr. Ollari is also affiliated with Baystate Medical Center. The medical group on file is Baystate OB/GYN Group. Dmand AI also links Dr. Ollari to 2 more hospitals and 1 group practice or clinic, each 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. Christopher John Ollari's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ollari practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Baystate OB/GYN Group Inc | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Christopher John Ollari is one of 903 OB-GYNs in Massachusetts
Obstetrics and gynecology is Dr. Ollari's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Ollari is licensed in Massachusetts.
Specialties and state licenses
- Obstetrics and gynecology, MassachusettsPrimary
OB-GYNs near Dr. Ollari
Counts of OB-GYNs 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. Christopher John Ollari billed Medicare for 231 services in 2024
CMS data shows 231 Medicare services from Dr. Ollari across 7 procedure codes in 2024, for 145 Medicare patients. Medicare paid $11,149 for them. Every service was in an office.
Dr. Ollari's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 1242024: 9127%
- Office and hospital visits
- 2023: 1162024: 7932%
- Imaging
- 2023: 562024: 4225%
- Lab and pathology
- 2023: 272024: 1930%
Dr. Ollari compared with the Massachusetts median for OB-GYNs, 2024
- Dr. Ollari
- Massachusetts median
- Medicare services
- 231vs 584.0 times
- Medicare patients
- 145vs 562.6 times
- Part D claims
- 215vs 297.4 times
Medians across 803 OB-GYNs in Massachusetts with Dmand AI profiles that report each measure.
Dr. Ollari'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. Ollari and other OB-GYNs in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Christopher John Ollari treated 145 Medicare patients in 2024, average age 69
CMS counts 145 Medicare patients who saw Dr. Ollari in 2024. The largest group is 65 to 74, with 81 patients. 62% of them have high cholesterol, and 54% have high blood pressure. 20% are also on Medicaid. Their average risk score is 0.80, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ollari's median patient age at 42, with 99% women.
Dr. Ollari's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Ollari's Medicare patients, 2024
- High cholesterol62%
- High blood pressure54%
- Arthritis46%
- Anxiety33%
- Mood disorders32%
- Depression23%
- Osteoporosis23%
- Diabetes16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ollari's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 42
Patient panel by sex, all payers
- Women99%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Christopher John Ollari wrote 312 Medicare Part D claims in 2024
In 2024, Dr. Ollari wrote 312 Medicare Part D claims for 125 patients. 84% of them were for generic drugs. CMS names the drug for 215 of them, across 11 drugs with 11 or more claims each, at $12,782 in total drug cost. In 2023, CMS named 194 claims across 9 drugs.
Dr. Ollari's Part D claims by kind of drug, 2024
- Generic263 claims84%
- Brand-name49 claims16%
Dr. Ollari'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. Ollari's Part D claims, 2024
- Antibiotics15%47 of 312 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: 1942024: 21511%
Drugs named by CMS: 11 in 2024, 9 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. Christopher John Ollari takes part in Medicare
Dr. Ollari accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Christopher John Ollari received $39 in industry payments from 2019 to 2020
CMS Open Payments shows 2 general payments to Dr. Ollari from 2 drug and device companies from 2019 to 2020. Education make up the largest share, 57% of the total. AMAG Pharmaceuticals, Inc. paid the most, $22.
General payments to Dr. Ollari by program year, 2019 to 2020
General payments to Dr. Ollari by kind, 2019 to 2020
- Education$2257%
- Food and beverage$1743%
Companies that paid Dr. Ollari the most, 2019 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Christopher John Ollari graduated from University of Massachusetts Medical School
Dr. Ollari graduated from University of Massachusetts Medical School in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Christopher John Ollari'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)Doctors and Clinicians Utilization Data (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. Christopher John Ollari
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. Christopher John Ollari's NPI number?
Dr. Christopher John Ollari's NPI number is 1669450326. It was assigned on January 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher John Ollari?
Dr. Christopher John Ollari is an OB-GYN in Springfield, Massachusetts. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Christopher John Ollari practice?
Dr. Ollari practices at 354 Birnie Ave, Springfield, MA 01107. Dr. Ollari's primary practice is Baystate OB/GYN Group Inc in Springfield, Massachusetts. Dmand AI also links Dr. Ollari to 2 hospitals and 1 group practice or clinic.
What is Dr. Christopher John Ollari's office phone number?
The practice phone on file for Dr. Ollari is (413) 794-8484.
What is Dr. Christopher John Ollari's medical license number?
Dr. Ollari holds Massachusetts license 159547.
Which hospitals is Dr. Christopher John Ollari affiliated with?
Dr. Ollari is affiliated with Baystate Medical Center. Dmand AI links Dr. Ollari to 2 more hospitals.
What medical group is Dr. Christopher John Ollari part of?
Dr. Ollari is linked to Baystate OB/GYN Group.
Does Dr. Christopher John Ollari accept Medicare?
Yes. CMS data shows Dr. Ollari billed Medicare for 231 services in 2024, and Dr. Ollari accepts Medicare assignment.
How many Medicare patients does Dr. Christopher John Ollari see?
CMS counts 145 Medicare patients who saw Dr. Ollari in 2024, with an average age of 69.
What services does Dr. Christopher John Ollari bill to Medicare?
In 2024, Dr. Ollari's most billed Medicare services were medicare service (G0101), office visit, established patient (99213) and medicare temporary code (Q0091).
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Where did Dr. Christopher John Ollari go to medical school?
Dr. Ollari graduated from University of Massachusetts Medical School in 1996.
What drugs does Dr. Christopher John Ollari prescribe most?
In 2024 Medicare Part D data, Dr. Ollari's most prescribed drugs by claims were Estradiol, Yuvafem and Clotrimazole-Betamethasone.
Has Dr. Christopher John Ollari received payments from drug or device companies?
CMS Open Payments shows $39 in general payments to Dr. Ollari from 2 companies from 2019 to 2020. The largest total came from AMAG Pharmaceuticals, Inc.
How long has Dr. Christopher John Ollari been practicing?
Dr. Ollari graduated from medical school in 1996, 30 years ago.
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