Dr. Peter Warner Nichols Jr., MD
- Medicare services, 2017
- 61
- Part D claims, 2023
- 11
- Hospital affiliations
- 1
- Industry payments
- $68
- Medical groups
- 4
- Practice address
- 4720 N Clarendon Ave, Chicago, IL 60640
- Practice phone
- Call (773) 878-9700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Montrose Behavioral Health Hospital for Kids
Chicago, Illinois
Find Dr. Nichols' 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. Peter Warner Nichols Jr. is a child and adolescent psychiatrist in Chicago, Illinois
Dr. Nichols practices at Montrose Behavioral Health Hospital for Kids in Chicago, Illinois.
Dr. Nichols' NPI, 1013112143, was assigned on June 19, 2007. Dr. Nichols holds Illinois license 036.118548.
- NPI
- 1013112143NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1759690811
- NPI enumeration date
- June 19, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (773) 878-9700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Peter Warner Nichols Jr. practices at Montrose Behavioral Health Hospital for Kids in Chicago, Illinois
Dr. Nichols' primary practice is Montrose Behavioral Health Hospital for Kids, at 4720 N Clarendon Ave, Chicago, IL 60640 in Cook County. The practice phone is (773) 878-9700.
- Montrose Behavioral Health Hospital for Kids4720 N Clarendon Ave, Chicago, IL 60640 · Cook CountyPhone(773) 878-9700
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Peter Warner Nichols Jr. is affiliated with 2 sites of care and 4 medical groups
Dr. Nichols' primary practice is Montrose Behavioral Health Hospital for Kids in Chicago, Illinois. Dr. Nichols is also affiliated with Streamwood Behavioral Healthcare System. The medical group on file is LifeStance Health. Dmand AI also links Dr. Nichols to 3 more medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Peter Warner Nichols Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nichols practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Montrose Behavioral Health Hospital for Kids | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Peter Warner Nichols Jr. is one of 203 childs and adolescent psychiatrists in Illinois
Child and adolescent psychiatry is Dr. Nichols' primary specialty in the NPI Registry, under taxonomy code 2084P0804X. Dr. Nichols is licensed in Illinois.
Specialties and state licenses
- Child and adolescent psychiatry, IllinoisPrimary
Childs and adolescent psychiatrists near Dr. Nichols
Counts of childs and adolescent 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. Peter Warner Nichols Jr. billed Medicare for 61 services in 2017
CMS data shows 61 Medicare services from Dr. Nichols across 1 procedure code in 2017. Medicare paid $1,937 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nichols compared with the Illinois median for childs and adolescent psychiatrists, 2017
- Dr. Nichols
- Illinois median
- Medicare services
- 61vs 7418% below
- Part D claims
- 11vs 7886% below
Medians across 188 childs and adolescent psychiatrists in Illinois with Dmand AI profiles that report each measure.
Dr. Nichols' most billed Medicare procedure codes, 2017
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Nichols?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nichols and other childs and adolescent psychiatrists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Peter Warner Nichols Jr.'s patients have a median age of 23
Across all payers, Dmand AI patient panel data puts Dr. Nichols' median patient age at 23, with 48% women.
Dr. Nichols' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 23
Patient panel by sex, all payers
- Women48%
- Men52%
Source: Dmand AI Patient Panel Data
Dr. Peter Warner Nichols Jr. wrote 11 Medicare Part D claims in 2023
In 2023, Dr. Nichols wrote 11 Medicare Part D claims. They cover 1 drug, with $1,124 in total drug cost. In 2022, CMS named 12 claims across 1 drug.
Dr. Nichols' most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 122023: 118%
Drugs named by CMS: 1 in 2023, 1 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Peter Warner Nichols Jr. takes part in Medicare
Dr. Nichols 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Peter Warner Nichols Jr. received $68 in industry payments from 2017 to 2023
CMS Open Payments shows 3 general payments to Dr. Nichols from 3 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $28.
General payments to Dr. Nichols by program year, 2017 to 2023
Companies that paid Dr. Nichols the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Peter Warner Nichols Jr.'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 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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) |
| 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. Peter Warner Nichols Jr.
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. Peter Warner Nichols Jr.'s NPI number?
Dr. Peter Warner Nichols Jr.'s NPI number is 1013112143. It was assigned on June 19, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Peter Warner Nichols Jr.?
Dr. Peter Warner Nichols Jr. is a child and adolescent psychiatrist in Chicago, Illinois. The primary specialty in the NPI Registry is Child & Adolescent Psychiatry Physician (taxonomy code 2084P0804X).
Where does Dr. Peter Warner Nichols Jr. practice?
Dr. Nichols practices at 4720 N Clarendon Ave, Chicago, IL 60640. Dr. Nichols' primary practice is Montrose Behavioral Health Hospital for Kids in Chicago, Illinois. Dmand AI also links Dr. Nichols to 3 medical groups.
What is Dr. Peter Warner Nichols Jr.'s office phone number?
The practice phone on file for Dr. Nichols is (773) 878-9700.
What is Dr. Peter Warner Nichols Jr.'s medical license number?
Dr. Nichols holds Illinois license 036.118548.
Which hospitals is Dr. Peter Warner Nichols Jr. affiliated with?
Dr. Nichols is affiliated with Streamwood Behavioral Healthcare System.
What medical group is Dr. Peter Warner Nichols Jr. part of?
Dr. Nichols is linked to LifeStance Health. Dmand AI links Dr. Nichols to 3 more medical groups.
Does Dr. Peter Warner Nichols Jr. accept Medicare?
Yes. CMS data shows Dr. Nichols billed Medicare for 61 services in 2017, and Dr. Nichols accepts Medicare assignment.
What services does Dr. Peter Warner Nichols Jr. bill to Medicare?
In 2017, Dr. Nichols' most billed Medicare services were hospital inpatient care (99231).
What drugs does Dr. Peter Warner Nichols Jr. prescribe most?
In 2023 Medicare Part D data, Dr. Nichols' most prescribed drugs by claims were Dexmethylphenidate HCl ER.
Has Dr. Peter Warner Nichols Jr. received payments from drug or device companies?
CMS Open Payments shows $68 in general payments to Dr. Nichols from 3 companies from 2017 to 2023. The largest total came from Abbvie Inc.
How long has Dr. Peter Warner Nichols Jr. been practicing?
Dr. Nichols graduated from medical school in 2004, 22 years ago.
Selling to child and adolescent psychiatry practices?
See childs and adolescent psychiatrists in Illinois by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card