Dr. John Christopher Colby, MD
- Medicare services, 2021
- 14
- Medicare patients, 2024
- 17
- Part D claims, 2024
- 69
- Hospital affiliations
- 2
- Industry payments
- $347
- Practice address
- 2010 Health Campus Drive, Harrisonburg, VA 22801
- Practice phone
- Call (540) 689-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Colby's professional email, personal email and mobile number
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Dr. John Christopher Colby is an OB-GYN in Rockingham, Virginia
Dr. Colby practices at Sentara RMH Medical Center in Harrisonburg, Virginia, part of Sentara Health.
Dr. Colby's NPI, 1760523310, was assigned on February 8, 2007. Dr. Colby graduated from Medical College of Georgia School of Medicine in 1991. Dr. Colby holds Virginia license 0101236532.
- NPI
- 1760523310NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7517936420
- NPI enumeration date
- February 8, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (540) 689-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Christopher Colby practices at Sentara RMH Medical Center in Harrisonburg, Virginia
Dr. Colby's primary practice is Sentara RMH Medical Center, at 2010 Health Campus Drive, Harrisonburg, VA 22801 in Harrisonburg City. The practice phone is (540) 689-1000.
- Sentara RMH Medical Center2010 Health Campus Drive, Harrisonburg, VA 22801 · Harrisonburg CityPhone(540) 689-1000
Source: Dmand AI Affiliation Data
Dr. John Christopher Colby is affiliated with 2 sites of care and 2 medical groups
Dr. Colby's primary practice is Sentara RMH Medical Center in Harrisonburg, Virginia, part of Sentara Health. Dr. Colby is also affiliated with Carilion New River Valley Medical Center. The medical group on file is Ob Hospitalist Group. Dmand AI also links Dr. Colby to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Christopher Colby's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Colby practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sentara RMH Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Christopher Colby is one of 1,063 OB-GYNs in Virginia
Obstetrics and gynecology is Dr. Colby's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Colby is licensed in Virginia.
Specialties and state licenses
- Obstetrics and gynecology, VirginiaPrimary
OB-GYNs near Dr. Colby
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. John Christopher Colby billed Medicare for 14 services in 2021
CMS data shows 14 Medicare services from Dr. Colby across 1 procedure code in 2021, for 17 Medicare patients. Medicare paid $552 for them. Every service was in an office.
Dr. Colby's Medicare services by type, 2019 to 2021
- 2019
- 2021
- Other services
- 2019: 312021: 1455%
- Office and hospital visits
- 2019: 122021: 0100%
Dr. Colby compared with the Virginia median for OB-GYNs, 2021
- Dr. Colby
- Virginia median
- Medicare services
- 14vs 7281% below
- Medicare patients
- 17vs 5469% below
- Part D claims
- 30vs 339% below
Medians across 866 OB-GYNs in Virginia with Dmand AI profiles that report each measure.
Dr. Colby's most billed Medicare procedure codes, 2021
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. Colby and other OB-GYNs in Virginia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Christopher Colby treated 17 Medicare patients in 2024, average age 73
CMS counts 17 Medicare patients who saw Dr. Colby in 2024. 75% of them have high cholesterol, and 71% have high blood pressure. Their average risk score is 1.47, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Colby's median patient age at 32, with 100% women.
Chronic conditions among Dr. Colby's Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
Share of Medicare patients with each condition. A patient can have several.
Dr. Colby's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 32
Patient panel by sex, all payers
- Women100%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Christopher Colby wrote 69 Medicare Part D claims in 2024
In 2024, Dr. Colby wrote 69 Medicare Part D claims for 27 patients. 80% of them were for generic drugs. CMS names the drug for 30 of them, across 2 drugs with 11 or more claims each, at $5,213 in total drug cost. In 2023, CMS named 14 claims across 1 drug.
Dr. Colby's Part D claims by kind of drug, 2024
- Generic55 claims80%
- Brand-name14 claims20%
Dr. Colby'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: 142024: 30114%
Drugs named by CMS: 2 in 2024, 1 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. John Christopher Colby takes part in Medicare
Dr. Colby 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. John Christopher Colby received $347 in industry payments from 2016 to 2019
CMS Open Payments shows 26 general payments to Dr. Colby from 8 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 79% of the total. AMAG Pharmaceuticals, Inc. paid the most, $159.
General payments to Dr. Colby by program year, 2016 to 2019
General payments to Dr. Colby by kind, 2016 to 2019
- Food and beverage$27379%
- Education$7421%
Companies that paid Dr. Colby the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Christopher Colby graduated from Medical College of Georgia School of Medicine
Dr. Colby graduated from Medical College of Georgia School of Medicine in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Christopher Colby'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 Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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. John Christopher Colby
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 Christopher Colby's NPI number?
Dr. John Christopher Colby's NPI number is 1760523310. It was assigned on February 8, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. John Christopher Colby?
Dr. John Christopher Colby is an OB-GYN in Rockingham, Virginia. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. John Christopher Colby practice?
Dr. Colby practices at 2010 Health Campus Drive, Harrisonburg, VA 22801. Dr. Colby's primary practice is Sentara RMH Medical Center in Harrisonburg, Virginia, part of Sentara Health. Dmand AI also links Dr. Colby to 1 medical group.
What is Dr. John Christopher Colby's office phone number?
The practice phone on file for Dr. Colby is (540) 689-1000.
What is Dr. John Christopher Colby's medical license number?
Dr. Colby holds Virginia license 0101236532.
Which hospitals is Dr. John Christopher Colby affiliated with?
Dr. Colby practices at Sentara RMH Medical Center in Harrisonburg, Virginia. Dr. Colby is also affiliated with Carilion New River Valley Medical Center.
What medical group is Dr. John Christopher Colby part of?
Dr. Colby is linked to Ob Hospitalist Group. Dmand AI links Dr. Colby to 1 more medical group.
Does Dr. John Christopher Colby accept Medicare?
Yes. CMS data shows Dr. Colby billed Medicare for 14 services in 2021, and Dr. Colby accepts Medicare assignment.
How many Medicare patients does Dr. John Christopher Colby see?
CMS counts 17 Medicare patients who saw Dr. Colby in 2024, with an average age of 73.
What services does Dr. John Christopher Colby bill to Medicare?
In 2021, Dr. Colby's most billed Medicare services were medicare service (G0101).
Show 4 more questionsShow fewer questions
Where did Dr. John Christopher Colby go to medical school?
Dr. Colby graduated from Medical College of Georgia School of Medicine in 1991.
What drugs does Dr. John Christopher Colby prescribe most?
In 2024 Medicare Part D data, Dr. Colby's most prescribed drugs by claims were Estradiol and Premarin.
Has Dr. John Christopher Colby received payments from drug or device companies?
CMS Open Payments shows $347 in general payments to Dr. Colby from 8 companies from 2016 to 2019. The largest total came from AMAG Pharmaceuticals, Inc.
How long has Dr. John Christopher Colby been practicing?
Dr. Colby graduated from medical school in 1991, 35 years ago.
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