DR. CLARISSA S GEYER M.D.
NPI 1528264223
Internal Medicine - Hematology & Oncology in Morristown, TN

Q: What is Clarissa Geyer's NPI number?

The NPI number for Clarissa Geyer is 1528264223. It was assigned to this individual provider in the NPPES registry on June 21, 2007.

Q: What is Clarissa Geyer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Clarissa Geyer was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.

Active since June 21, 2007PECOS EnrolledAccepts Medicare Assignment

95.69/100

CMS Quality Rating

908 W 4TH NORTH ST, MORRISTOWN, TN 37814(423) 522-4900(423) 522-4901 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Clarissa S Geyer M.d. NPPES

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

DR. CLARISSA S GEYER M.D. (NPI 1528264223) is an individual hematology & oncology provider in Morristown, Tennessee, licensed in Tennessee (MD0000034568) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS, is affiliated with University Health System, Inc, and is a graduate of Other (1989).

NPPES Registry Identity

NPI1528264223

Entity TypeIndividualFemale

Primary Taxonomy207RH0003X

Provider Legal NameDR. CLARISSA S GEYERCredential: M.D.

Location Address908 W 4TH NORTH STMorristown, TN 37814-3894

Mailing Address1934 Alcoa Hwy Ste 474Knoxville, TN 37920-1526 · (865) 544-8780 · Fax (865) 544-8199

Phone(423) 522-4900

Fax(423) 522-4901

Sole ProprietorNo

Medical School CMSOtherGraduated 1989

Enumeration DateJune 21, 2007

Last NPPES UpdateJuly 8, 2007

✔ NPI 1528264223 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in TN · MD0000034568

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

908 W 4TH NORTH ST, Morristown, TN 37814

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Other Identifiers 1

Medicare UPINH41831TN

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BlueCross BlueShield of Tennessee, Cigna Healthcare, Oscar Insurance Company and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Clarissa S Geyer M.d. 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 ID8325130198

PECOS Enrollment IDI20070824000131

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.

Medicare Billing Reassignment

Medicare enrollment records show Clarissa Geyer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Health System, Inc

12 mi

Internal Medicine

1413 RUSSELL AVE
Jefferson City, TN 37760

Reassigned Medicare billing, Tennessee enrollment
832 clinicians in this Medicare group

NPI 1083923197 (865) 670-6199

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

87 services47 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

79 services29 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.

63 services48 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

14 services14 patients

Hospital Affiliations CMS Care Compare 4

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

University Health System, Inc

Acute Care Hospitals · Knoxville, TN

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number440015

Location1924 Alcoa HighwayKnoxville, TN 37920 · Knox County

Emergency services Birthing friendly

Sweetwater Hospital Association

Acute Care Hospitals · Sweetwater, TN

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number440084

Location304 Wright StSweetwater, TN 37874 · Monroe County

Emergency services Birthing friendly

Fort Loudoun Medical Center

Acute Care Hospitals · Lenoir City, TN

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number440110

Location550 Fort Loudon Medical Center DrLenoir City, TN 37772 · Loudon County

Emergency services

Parkwest Medical Center

Acute Care Hospitals · Knoxville, TN

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number440173

Location9352 Park West BlvdKnoxville, TN 37923 · Knox County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37814 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

$160.89 typical visit price

range $52.64 – $160.89

Typical copayment $40.22 (range $13.16 – $40.22)

Most-billed visit code 99205

Established Patient

$93.60 typical visit price

range $16.72 – $131.41

Typical copayment $23.40 (range $4.18 – $32.85)

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.

95.69/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

85.28

Promoting Interoperability

100

Improvement Activities

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. ALAY MANSUROV M.D.

Internal Medicine (Hematology & Oncology)

908 W 4TH NORTH ST
MORRISTOWN, TN 37814

Hamblen County (423) 492-6100

MARK J HARRELL MD

Emergency Medicine

908 W 4TH NORTH ST
MORRISTOWN, TN 37814

Hamblen County (423) 492-5400

EAST TN PHARMACIST CONSULTANTS

Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)

908 W 4TH NORTH ST
MORRISTOWN, TN 37814

Hamblen County (423) 618-8805

KELSEY BICKEL PHARMD

Pharmacist

908 W 4TH NORTH ST
MORRISTOWN, TN 37814

Hamblen County (937) 395-4681

KIMBERLY MICHELLE ARROWOOD ANP-BC, GNP-BC

Nurse Practitioner (Adult Health)

908 W 4TH NORTH ST
MORRISTOWN, TN 37814

Hamblen County (423) 492-6100

PATRICIA A HEWITT TAMBEAU RN

Registered Nurse

908 W 4TH NORTH ST
MORRISTOWN, TN 37814

Hamblen County (423) 926-1171

EAST TENNESSEE PATHOLOGY, PLLC

Clinical Medical Laboratory

908 W 4TH NORTH ST, MORRISTOWN-HAMBLEN HOSPITAL
MORRISTOWN, TN 37814

Hamblen County (423) 586-4231

KARIE HALL PA-C

Physician Assistant

908 W 4TH NORTH ST
MORRISTOWN, TN 37814

Hamblen County (423) 492-9000

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 Clarissa Geyer's NPI number?

The NPI number for Clarissa Geyer is 1528264223. It was assigned to this individual provider in the NPPES registry on June 21, 2007.

Where is Clarissa Geyer located?

Clarissa Geyer practices at 908 W 4th North St, Morristown, TN 37814. The listed phone number is (423) 522-4900.

What is Clarissa Geyer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Clarissa Geyer enrolled in Medicare?

Yes. Clarissa Geyer 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.

Which organization bills Medicare for Clarissa Geyer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Clarissa Geyer reassigns Medicare benefits to University Health System, Inc (Jefferson City, TN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Clarissa Geyer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Clarissa Geyer accept?

Health plans from BlueCross BlueShield of Tennessee, Cigna Healthcare, Oscar Insurance Company and UnitedHealthcare list Clarissa Geyer 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 Clarissa Geyer affiliated with any hospitals?

According to CMS data, Clarissa Geyer is affiliated with University Health System, Inc, Sweetwater Hospital Association, Fort Loudoun Medical Center and Parkwest Medical Center.

When was this NPI record last updated?

The NPPES record for Clarissa Geyer was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.