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DR. KATHRYN M DIEMER MD
NPI 1891713590
Internal Medicine - Endocrinology, Diabetes & Metabolism in Saint Louis, MO

Active since July 18, 2006PECOS EnrolledAccepts Medicare Assignment
79.29/100
CMS Quality Rating
10 BARNES WEST DR, DIV IM BONE AND MINERAL, STE 200, SAINT LOUIS, MO 63141(314) 454-7775(314) 996-3087 Get Directions Write a Review

NPPES record last updated: April 17, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Apr 25, 2024, Apr 10, 2024, Nov 15, 2021 and 2 more (5 updates tracked since 2016).

About Dr. Kathryn M Diemer Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. KATHRYN M DIEMER MD (NPI 1891713590) is an individual endocrinology, diabetes & metabolism provider in Saint Louis, Missouri, licensed in Missouri (R1G54) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Memorial Hospital, and is a graduate of University Of Missouri, Columbia School Of Medicine (1985).

NPPES Registry Identity

NPI1891713590
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameDR. KATHRYN M DIEMERCredential: MD
Location Address10 BARNES WEST DR, DIV IM BONE AND MINERAL, STE 200Saint Louis, MO 63141-6287
Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 454-7775 · Fax (314) 996-3087
Phone(314) 454-7775
Fax(314) 996-3087
Sole ProprietorNo
Medical School CMSUniversity Of Missouri, Columbia School Of MedicineGraduated 1985
Enumeration DateJuly 18, 2006
Last NPPES UpdateApril 17, 20255 updates tracked since enumeration
✔ NPI 1891713590 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in MO · R1G54
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
10 BARNES WEST DR, Saint Louis, MO 63141
Open in Google Maps ↗

Other Identifiers 1

Medicaid202711230MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cox HealthPlans.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Kathryn M Diemer Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4486770906
PECOS Enrollment IDI20100922000089
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, denosumab, 1 mg J0897
Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.
13,680 services198 patients
Injection, romosozumab-aqqg, 1 mg J3111
Romosozumab-aqqg is a medication given by injection to treat osteoporosis in patients at high risk for fractures. It works by increasing bone mass and strength, reducing the risk of fractures.
8,190 services28 patients
Dxa bone density measurement of hip, pelvis, spine 77080
A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.
1,489 services1,482 patients
Calculation of trabecular bone score (tbs) using imaging data with interpretation and report on fracture risk 77089
Trabecular Bone Score (TBS) is a technique that uses imaging data to evaluate bone texture. It provides insight into bone strength, helping predict fracture risk. This information is then compiled into a report to aid in your bone health management.
1,103 services1,097 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
482 services470 patients
Injection of drug or substance under skin or into muscle 96372
This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
268 services226 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Memorial Hospital

Acute Care Hospitals · Belleville, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140185
Location4500 Memorial DriveBelleville, IL 62226 · St. Clair County
Emergency services Birthing friendly

Barnes Jewish Hospital

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number260032
LocationOne Barnes-Jewish Hospital PlazaSaint Louis, MO 63110 · St. Louis City County
Emergency services Birthing friendly

Missouri Baptist Medical Center

Acute Care Hospitals · Town And Country, MO
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260108
Location3015 N Ballas RdTown And Country, MO 63131 · St. Louis County
Emergency services Birthing friendly

Barnes-Jewish West County Hospital

Acute Care Hospitals · Creve Coeur, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260162
Location12634 Olive BoulevardCreve Coeur, MO 63141 · St. Louis County
Emergency services

Barnes-Jewish St Peters Hospital

Acute Care Hospitals · Saint Peters, MO
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number260191
Location10 Hospital DrSaint Peters, MO 63376 · St. Charles County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63141 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

79.29/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality71.46
Promoting Interoperability100
Improvement Activities40
Cost59.51

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MANASA MADHURI METIREDDY MD
Internal Medicine (Nephrology)
10 BARNES WEST DR, DIV IM NEPHROLOGY, STE 200
SAINT LOUIS, MO 63141
St. Louis County (314) 362-7603
DR. CARLOS ALFONSO QUILALA SANTOS MD
Internal Medicine (Infectious Disease)
10 BARNES WEST DR, POB 2 STE 200
SAINT LOUIS, MO 63141
St. Louis County (314) 747-2066
DR. MICHAEL G BEAT MD
Radiology (Radiation Oncology)
10 BARNES WEST DR, STE 101
SAINT LOUIS, MO 63141
St. Louis County (314) 996-3335
DR. ELLIE PATRICE FISHBEIN MD
Internal Medicine (Geriatric Medicine)
10 BARNES WEST DR, DIV IM GERIATRICS, STE 200
SAINT LOUIS, MO 63141
St. Louis County (314) 273-4374
DR. RAMA SURESH MD
Internal Medicine (Medical Oncology)
10 BARNES WEST DR, DIV IM MEDICAL ONCOLOGY, MOB #2
SAINT LOUIS, MO 63141
St. Louis County (800) 647-2098
DR. DAVID B CARR MD
Internal Medicine (Geriatric Medicine)
10 BARNES WEST DR, DIV IM GERIATRICS, STE 200
SAINT LOUIS, MO 63141
St. Louis County (314) 273-4374
DR. ROBERTO CIVITELLI MD
Internal Medicine (Endocrinology, Diabetes & Metabolism)
10 BARNES WEST DR, DIV IM BONE AND MINERAL, STE 200
SAINT LOUIS, MO 63141
St. Louis County (314) 454-7775
DR. MUSTAFAA SALEEM MAHMOOD MD
Radiology (Radiation Oncology)
10 BARNES WEST DR, DEPT RADIATION ONCOLOGY, STE 101
SAINT LOUIS, MO 63141
St. Louis County (314) 996-3335

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Kathryn Diemer's NPI number?

The NPI number for Kathryn Diemer is 1891713590. It was assigned to this individual provider in the NPPES registry on July 18, 2006.

Where is Kathryn Diemer located?

Kathryn Diemer practices at 10 Barnes West Dr Div Im Bone And Mineral, Ste 200, Saint Louis, MO 63141. The listed phone number is (314) 454-7775.

What is Kathryn Diemer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Kathryn Diemer enrolled in Medicare?

Yes. Kathryn Diemer is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Kathryn Diemer accept?

Health plans from Cox HealthPlans list Kathryn Diemer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Kathryn Diemer affiliated with any hospitals?

According to CMS data, Kathryn Diemer is affiliated with Memorial Hospital, Barnes Jewish Hospital, Missouri Baptist Medical Center, Barnes-Jewish West County Hospital and Barnes-Jewish St Peters Hospital.

When was this NPI record last updated?

The NPPES record for Kathryn Diemer was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.