JOANNA DUANE TWOMBLY D.O.
NPI 1780857284
Obstetrics & Gynecology in Bolivar, MO

Active since April 07, 2008PECOS EnrolledAccepts Medicare Assignment
1500 N OAKLAND AVE, BOLIVAR, MO 65613(417) 326-6000 Get Directions Write a Review

NPPES record last updated: January 15, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jan 15, 2026, Apr 4, 2024, Jul 3, 2023 and 2 more (5 updates tracked since 2023).

About Joanna Duane Twombly D.o. NPPES

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

JOANNA DUANE TWOMBLY D.O. (NPI 1780857284) is an individual obstetrics & gynecology provider in Bolivar, Missouri, licensed in Missouri (2018014390) and active in the NPI registry since April 2008. She is enrolled in Medicare PECOS, is affiliated with Mayo Clinic Health System - Albert Lea And Austin, and is a graduate of Other (2008).

NPPES Registry Identity

NPI1780857284
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameJOANNA DUANE TWOMBLYCredential: D.O.
Location Address1500 N OAKLAND AVEBolivar, MO 65613-3011
Mailing Address6456 Abigail LnRepublic, MO 65738-9496 · (419) 261-0159
Sole ProprietorNo
Medical School CMSOtherGraduated 2008
Enumeration DateApril 7, 2008
Last NPPES UpdateJanuary 15, 20265 updates tracked since enumeration
NPPES CertifiedJanuary 15, 2026
NPI 1780857284 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Licenses Licensed in MO · 2018014390 Licensed in MN · 75069 Licensed in ME · DO3556 Licensed in WA · OP61394894 Licensed in OH · 34-009177 Licensed in ME · LT22014 Licensed in AR · 06-1833974
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
1500 N OAKLAND AVE, Bolivar, MO 65613

Other Identifiers 2

Medicaid197028003AR
Other267325YJL4AR · Medicare Ptan

Accepted 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

Joanna Duane Twombly D.o. 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 ID2567538770
PECOS Enrollment IDI20230929003073
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.

Hospital Affiliations CMS Care Compare 2

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

Mayo Clinic Health System - Albert Lea And Austin

Acute Care Hospitals · Albert Lea, MN
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number240043
Location404 West Fountain StreetAlbert Lea, MN 56007 · Freeborn County
Emergency services Birthing friendly

Lake Regional Health System

Acute Care Hospitals · Osage Beach, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number260186
Location54 Hospital DriveOsage Beach, MO 65065 · Camden County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 65613 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
$121.96 typical visit price
range $52.28 – $161.24
Typical copayment $30.49 (range $13.07 – $40.31)
Most-billed visit code 99204
Established Patient
$65.71 typical visit price
range $16.30 – $131.05
Typical copayment $16.42 (range $4.07 – $32.76)
Most-billed visit code 99213
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.

Reported Quality Measures

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
100%46 patients5/55-star benchmark: 100%
Preventive Care and Screening: Screening for Depression and Follow-Up Plan
Percentage of patients aged 12 years and older screened for depression on the date of the encounter using an age appropriate standardized depression screening tool AND if positive, a follow-up plan is documented on the date of the positive screen
100%35 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

Anesthesiology
1500 N OAKLAND AVE
BOLIVAR, MO 65613
Psychiatric Unit
1500 N OAKLAND AVE
BOLIVAR, MO 65613
General Acute Care Hospital
1500 N OAKLAND AVE
BOLIVAR, MO 65613
Emergency Medicine
1500 N OAKLAND AVE
BOLIVAR, MO 65613
Physical Therapist
1500 N OAKLAND AVE
BOLIVAR, MO 65613
Audiologist
1500 N OAKLAND AVE
BOLIVAR, MO 65613
Occupational Therapist
1500 N OAKLAND AVE
BOLIVAR, MO 65613
Emergency Medicine
1500 N OAKLAND AVE
BOLIVAR, MO 65613

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 Joanna Twombly's NPI number?

The NPI number for Joanna Twombly is 1780857284. It was assigned to this individual provider in the NPPES registry on April 7, 2008.

Where is Joanna Twombly located?

Joanna Twombly practices at 1500 N Oakland Ave, Bolivar, MO 65613. The listed phone number is (417) 326-6000.

What is Joanna Twombly's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Joanna Twombly enrolled in Medicare?

Yes. Joanna Twombly 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 Joanna Twombly accept?

Health plans from Medica and UnitedHealthcare list Joanna Twombly 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 Joanna Twombly affiliated with any hospitals?

According to CMS data, Joanna Twombly is affiliated with Mayo Clinic Health System - Albert Lea And Austin and Lake Regional Health System.

When was this NPI record last updated?

The NPPES record for Joanna Twombly was last updated on January 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.