Dr. John Harold Montgomery, DO
- Medicare services, 2024
- 976
- Medicare patients, 2024
- 135
- Part D claims, 2024
- 950
- Hospital affiliations
- 2
- Industry payments
- $274
- Practice address
- 2809 Denny Av, Pascagoula, MS 39581
- Practice phone
- Call (228) 809-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Montgomery's professional email, personal email and mobile number
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Dr. John Harold Montgomery is a psychiatrist in Pascagoula, Mississippi
Dr. Montgomery practices at Pascagoula Hospital in Pascagoula, Mississippi, part of State of Mississippi.
Dr. Montgomery's NPI, 1821027368, was assigned on June 30, 2006. Dr. Montgomery graduated from Nova Southeastern College of Osteo Medicine in 1998. Dr. Montgomery holds Mississippi license 18132.
- NPI
- 1821027368NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305872136
- NPI enumeration date
- June 30, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (228) 809-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Harold Montgomery practices at Pascagoula Hospital in Pascagoula, Mississippi
Dr. Montgomery's primary practice is Pascagoula Hospital, at 2809 Denny Av, Pascagoula, MS 39581 in Jackson County. The practice phone is (228) 809-5000.
- Pascagoula Hospital2809 Denny Av, Pascagoula, MS 39581 · Jackson CountyPhone(228) 809-5000
Source: Dmand AI Affiliation Data
Dr. John Harold Montgomery is affiliated with 4 sites of care and 3 medical groups
Dr. Montgomery's primary practice is Pascagoula Hospital in Pascagoula, Mississippi, part of State of Mississippi. Dr. Montgomery is also affiliated with Singing River Gulfport. The medical group on file is Singing River Health System. Dmand AI also links Dr. Montgomery to 2 more group practices and clinics and 2 medical groups, each 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 Harold Montgomery's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Montgomery practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pascagoula Hospital | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Harold Montgomery is one of 165 psychiatrists in Mississippi
Psychiatry is Dr. Montgomery's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Montgomery is licensed in Mississippi.
Specialties and state licenses
- Psychiatry, MississippiPrimary
Psychiatrists near Dr. Montgomery
Counts of psychiatrists 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 Harold Montgomery billed Medicare for 976 services in 2024
CMS data shows 976 Medicare services from Dr. Montgomery across 8 procedure codes in 2024, for 135 Medicare patients. Medicare paid $73,858 for them.
Dr. Montgomery's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6962024: 7619%
- Tests and treatments
- 2023: 1692024: 21527%
Where Dr. Montgomery's Medicare services took place, 2024
- In an office162%
- In a facility96098%
Dr. Montgomery compared with the Mississippi median for psychiatrists, 2024
- Dr. Montgomery
- Mississippi median
- Medicare services
- 976vs 2104.6 times
- Medicare patients
- 135vs 8461% above
- Part D claims
- 697vs 2852.4 times
Medians across 172 psychiatrists in Mississippi with Dmand AI profiles that report each measure.
Dr. Montgomery'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Harold Montgomery treated 135 Medicare patients in 2024, average age 71
CMS counts 135 Medicare patients who saw Dr. Montgomery in 2024. The largest group is 65 to 74, with 46 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 37% are also on Medicaid. Their average risk score is 1.70, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Montgomery's median patient age at 72, with 46% women.
Dr. Montgomery's Medicare patients by age, 2024
Dr. Montgomery's Medicare patients by sex, 2024
- Women8563%
- Men5037%
Chronic conditions among Dr. Montgomery's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Mood disorders75%
- Depression69%
- Alzheimer's and dementia66%
- Anxiety61%
- Schizophrenia and other psychoses50%
- Arthritis48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Montgomery's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Harold Montgomery wrote 950 Medicare Part D claims in 2024
In 2024, Dr. Montgomery wrote 950 Medicare Part D claims for 159 patients. 95% of them were for generic drugs. CMS names the drug for 697 of them, across 23 drugs with 11 or more claims each, at $128,331 in total drug cost. In 2023, CMS named 501 claims across 17 drugs.
Dr. Montgomery's Part D claims by kind of drug, 2024
- Generic898 claims95%
- Brand-name52 claims5%
Dr. Montgomery'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. Montgomery's Part D claims, 2024
- Antipsychotics, patients 65 and over21%198 of 950 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: 5012024: 69739%
Drugs named by CMS: 23 in 2024, 17 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 Harold Montgomery takes part in Medicare
Dr. Montgomery 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 Harold Montgomery received $274 in industry payments from 2016 to 2022
CMS Open Payments shows 11 general payments to Dr. Montgomery from 5 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Avanir Pharmaceuticals, Inc. paid the most, $137.
General payments to Dr. Montgomery by program year, 2016 to 2022
Companies that paid Dr. Montgomery the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Harold Montgomery graduated from Nova Southeastern College of Osteo Medicine
Dr. Montgomery graduated from Nova Southeastern College of Osteo Medicine in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Harold Montgomery'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 Harold Montgomery
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 Harold Montgomery's NPI number?
Dr. John Harold Montgomery's NPI number is 1821027368. It was assigned on June 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Harold Montgomery?
Dr. John Harold Montgomery is a psychiatrist in Pascagoula, Mississippi. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. John Harold Montgomery practice?
Dr. Montgomery practices at 2809 Denny Av, Pascagoula, MS 39581. Dr. Montgomery's primary practice is Pascagoula Hospital in Pascagoula, Mississippi, part of State of Mississippi. Dmand AI also links Dr. Montgomery to 2 group practices and clinics and 2 medical groups.
What is Dr. John Harold Montgomery's office phone number?
The practice phone on file for Dr. Montgomery is (228) 809-5000.
What is Dr. John Harold Montgomery's medical license number?
Dr. Montgomery holds Mississippi license 18132.
Which hospitals is Dr. John Harold Montgomery affiliated with?
Dr. Montgomery practices at Pascagoula Hospital in Pascagoula, Mississippi. Dr. Montgomery is also affiliated with Singing River Gulfport.
What medical group is Dr. John Harold Montgomery part of?
Dr. Montgomery is linked to Singing River Health System. Dmand AI links Dr. Montgomery to 2 more medical groups.
Does Dr. John Harold Montgomery accept Medicare?
Yes. CMS data shows Dr. Montgomery billed Medicare for 976 services in 2024, and Dr. Montgomery accepts Medicare assignment.
How many Medicare patients does Dr. John Harold Montgomery see?
CMS counts 135 Medicare patients who saw Dr. Montgomery in 2024, with an average age of 71.
What services does Dr. John Harold Montgomery bill to Medicare?
In 2024, Dr. Montgomery's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and psychiatric service (90870).
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Where did Dr. John Harold Montgomery go to medical school?
Dr. Montgomery graduated from Nova Southeastern College of Osteo Medicine in 1998.
What drugs does Dr. John Harold Montgomery prescribe most?
In 2024 Medicare Part D data, Dr. Montgomery's most prescribed drugs by claims were Mirtazapine, Trazodone HCl and Quetiapine Fumarate.
Has Dr. John Harold Montgomery received payments from drug or device companies?
CMS Open Payments shows $274 in general payments to Dr. Montgomery from 5 companies from 2016 to 2022. The largest total came from Avanir Pharmaceuticals, Inc.
How long has Dr. John Harold Montgomery been practicing?
Dr. Montgomery graduated from medical school in 1998, 28 years ago.
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