Dr. Grace A. Montenegro, MD

  • Saint Louis, MO
  • Colorectal surgeon
NPI1497948087PAC ID7810202041
Medicare services, 2024
126
Medicare patients, 2024
97
Part D claims, 2024
153
Publications
13
MIPS score, 2024
85
Practice address
1201 S Grand Blvd, Saint Louis, MO 63104
Practice phone
Call (314) 257-8000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

SSM Health Saint Louis University Hospital

Hospital · Saint Louis, Missouri

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Dr. Grace A. Montenegro is a colorectal surgeon in Saint Louis, Missouri

Dr. Montenegro practices at SSM Health Saint Louis University Hospital in Saint Louis, Missouri, part of SSM Health Care.

Dr. Montenegro's NPI, 1497948087, was assigned on August 27, 2007. Dr. Montenegro holds Missouri license 2013017017.

NPI and contact details
Medicare PAC ID
7810202041
NPI enumeration date
August 27, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(314) 257-8000
Professional email
Get email
Personal email
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Mobile number
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Sex
Female
Estimated age
49
Medical school graduation
2003

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Grace A. Montenegro practices at SSM Health Saint Louis University Hospital in Saint Louis, Missouri

Dr. Montenegro's primary practice is SSM Health Saint Louis University Hospital, at 1201 S Grand Blvd, Saint Louis, MO 63104 in St. Louis City. The practice phone is (314) 257-8000.

Source: Dmand AI Affiliation Data

Dr. Grace A. Montenegro is affiliated with 5 sites of care and 1 medical group

Dr. Montenegro's primary practice is SSM Health Saint Louis University Hospital in Saint Louis, Missouri, part of SSM Health Care. Dr. Montenegro is also affiliated with SSM Health St. Mary's Hospital - St. Louis. The medical group on file is SLUCare Physician Group. Dmand AI also links Dr. Montenegro to 1 more hospital, 1 behavioral health center and 1 group practice or clinic, each named with a free account.

See all 6 affiliations for Dr. Montenegro

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Grace A. Montenegro's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Montenegro practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
SSM Health Saint Louis University HospitalAvailable with a free account
+4 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Grace A. Montenegro is one of 35 colorectal surgeons in Missouri

Colon and rectal surgery is Dr. Montenegro's primary specialty in the NPI Registry, under taxonomy code 208C00000X. Dr. Montenegro is licensed in Missouri.

Specialties and state licenses

  • Colon and rectal surgery, MissouriPrimaryLicense 2013017017 · taxonomy 208C00000X

Colorectal surgeons near Dr. Montenegro

Counts of colorectal surgeons 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. Grace A. Montenegro billed Medicare for 126 services in 2024

CMS data shows 126 Medicare services from Dr. Montenegro across 7 procedure codes in 2024, for 97 Medicare patients. Medicare paid $8,134 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024126
Medicare patients97
Paid by Medicare$8,134
Procedure codes7

Dr. Montenegro's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 652024: 11577%
Surgery
2023: 02024: 11

Dr. Montenegro compared with the Missouri median for colorectal surgeons, 2024

  • Dr. Montenegro
  • Missouri median
Medicare services
126vs 31560% below
Medicare patients
97vs 19049% below
Part D claims
130vs 20236% below

Medians across 34 colorectal surgeons in Missouri with Dmand AI profiles that report each measure.

Dr. Montenegro'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.

See all procedures by Dr. Montenegro

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

Dr. Grace A. Montenegro treated 97 Medicare patients in 2024, average age 64

CMS counts 97 Medicare patients who saw Dr. Montenegro in 2024. The largest group is 65 to 74, with 42 patients. 69% of them have high blood pressure, and 68% have high cholesterol. 40% are also on Medicaid. Their average risk score is 2.00, 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. Montenegro's median patient age at 62, with 50% women.

Medicare patients, 202497
Average age64
Average risk score2.00
Also on Medicaid40%

Dr. Montenegro's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Montenegro's Medicare patients by sex, 2024

  • Women5658%
  • Men4142%

Chronic conditions among Dr. Montenegro's Medicare patients, 2024

  1. High blood pressure69%
  2. High cholesterol68%
  3. Cancer46%
  4. Arthritis43%
  5. Anxiety38%
  6. Mood disorders35%
  7. Depression32%
  8. Chronic kidney disease31%

Share of Medicare patients with each condition. A patient can have several.

Dr. Montenegro's patients across all payers

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

Patient panel by age, all payers

Median age 62

Patient panel by sex, all payers

  • Women50%
  • Men49%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Grace A. Montenegro wrote 153 Medicare Part D claims in 2024

In 2024, Dr. Montenegro wrote 153 Medicare Part D claims for 49 patients. 99% of them were for generic drugs. CMS names the drug for 130 of them, across 5 drugs with 11 or more claims each, at $632 in total drug cost. In 2023, CMS named 136 claims across 5 drugs.

Part D claims, 2024153
Drugs named by CMS5
Total drug cost$632
Part D patients49

Dr. Montenegro's Part D claims by kind of drug, 2024

  • Generic152 claims99%
  • Brand-name and other1 claims1%

Dr. Montenegro'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. Montenegro's Part D claims, 2024

  • Antibiotics51%78 of 153 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: 1362024: 1304%

Drugs named by CMS: 5 in 2024, 5 in 2023.

See all prescribing by Dr. Montenegro

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

Dr. Grace A. Montenegro scored 85 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. Montenegro for performance year 2024, reported as part of a group. Dr. Montenegro accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 13 procedures of colonoscopy by Dr. Montenegro, more than 43% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Dr. Montenegro's MIPS scores, performance year 2024

  • 85of 100Final score
  • 68.5of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 72of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Where Dr. Montenegro ranks in Medicare procedure volume

Colonoscopy
43rd percentile13 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

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Dr. Grace A. Montenegro has 13 publications on record

Dmand AI links 13 papers to Dr. Montenegro, published from 2011 to 2022. 2014 was the busiest year, with 3. The most frequent topics are Laparoscopy, Colectomy and Colon, Transverse. Dr. Montenegro has published most often in Case Rep Surg. Dr. Montenegro's most frequent co-authors are Sekhar Dharmarajan, MD, Carrie Luu, MD and James W. Fleshman, MD.

Papers13
Years published2011 to 2022

Dr. Montenegro's papers by year, 2011 to 2022

Topics Dr. Montenegro writes about most

  • Laparoscopy
  • Colectomy
  • Colon, Transverse
  • Colorectal Neoplasms
  • Equipment Design
  • Length of Stay
  • Minimally Invasive Surgical Procedures
  • Rectal Neoplasms

Dr. Montenegro's most frequent co-authors

Recent publications by Dr. Montenegro

See all 13 publications and co-authors

See who Dr. Montenegro researches with

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

How network discovery works

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

Dr. Grace A. Montenegro received $17,435 in industry payments from 2016 to 2025

CMS Open Payments shows 71 general payments to Dr. Montenegro from 13 drug and device companies from 2016 to 2025. Education make up the largest share, 69% of the total. Intuitive Surgical, Inc. paid the most, $13,864.

General payments to Dr. Montenegro by program year, 2016 to 2025

General payments to Dr. Montenegro by kind, 2016 to 2025

$17.4Kin total
  • Education$12,00069%
  • Food and beverage$3,43920%
  • Travel and lodging$1,2977%
  • Speaker and faculty fees$4002%
  • Consulting fees$3002%

Companies that paid Dr. Montenegro the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Montenegro

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

Sources for Dr. Grace A. Montenegro'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 phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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)
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. Grace A. Montenegro

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. Grace A. Montenegro's NPI number?

Dr. Grace A. Montenegro's NPI number is 1497948087. It was assigned on August 27, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Grace A. Montenegro?

Dr. Grace A. Montenegro is a colorectal surgeon in Saint Louis, Missouri. The primary specialty in the NPI Registry is Colon & Rectal Surgery Physician (taxonomy code 208C00000X).

Where does Dr. Grace A. Montenegro practice?

Dr. Montenegro practices at 1201 S Grand Blvd, Saint Louis, MO 63104. Dr. Montenegro's primary practice is SSM Health Saint Louis University Hospital in Saint Louis, Missouri, part of SSM Health Care. Dmand AI also links Dr. Montenegro to 1 hospital, 1 behavioral health center and 1 group practice or clinic.

What is Dr. Grace A. Montenegro's office phone number?

The practice phone on file for Dr. Montenegro is (314) 257-8000.

What is Dr. Grace A. Montenegro's medical license number?

Dr. Montenegro holds Missouri license 2013017017.

Which hospitals is Dr. Grace A. Montenegro affiliated with?

Dr. Montenegro practices at SSM Health Saint Louis University Hospital in Saint Louis, Missouri. Dr. Montenegro is also affiliated with SSM Health St. Mary's Hospital - St. Louis. Dmand AI links Dr. Montenegro to 1 more hospital.

What medical group is Dr. Grace A. Montenegro part of?

Dr. Montenegro is linked to SLUCare Physician Group.

Does Dr. Grace A. Montenegro accept Medicare?

Yes. CMS data shows Dr. Montenegro billed Medicare for 126 services in 2024, and Dr. Montenegro accepts Medicare assignment.

What is Dr. Grace A. Montenegro's MIPS score?

Dr. Montenegro's MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.

How many Medicare patients does Dr. Grace A. Montenegro see?

CMS counts 97 Medicare patients who saw Dr. Montenegro in 2024, with an average age of 64.

Show 6 more questionsShow fewer questions

What services does Dr. Grace A. Montenegro bill to Medicare?

In 2024, Dr. Montenegro's most billed Medicare services were hospital inpatient care (99233), office visit, established patient (99213) and office visit, established patient (99214).

What drugs does Dr. Grace A. Montenegro prescribe most?

In 2024 Medicare Part D data, Dr. Montenegro's most prescribed drugs by claims were Metronidazole, Ondansetron HCl and Scopolamine.

Has Dr. Grace A. Montenegro received payments from drug or device companies?

CMS Open Payments shows $17,435 in general payments to Dr. Montenegro from 13 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.

How long has Dr. Grace A. Montenegro been practicing?

Dr. Montenegro graduated from medical school in 2003, 23 years ago.

Does Dr. Grace A. Montenegro do research?

Dmand AI links 13 publications to Dr. Montenegro, published from 2011 to 2022.

Who does Dr. Grace A. Montenegro publish with?

Dr. Montenegro's most frequent co-authors are Sekhar Dharmarajan, MD (3 shared papers), Carrie Luu, MD (3 shared papers) and James W. Fleshman, MD (2 shared papers).

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