Are you Dr. Thalken? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileWhere to find Gregory L. Thalken, MD
- Long Beach location main office
2801 Atlantic Ave, Long Beach, CA 90806 - Charlottesville location
500 Martha Jefferson Dr, Charlottesville, VA 22911 - Plymouth location
6125 Ranier Ln N, Plymouth, MN 55446 - Trenton location
750 Brunswick Ave, Trenton, NJ 08638 - Salem location
310 Salem Woodstown Rd, Salem, NJ 08079
About Dr. Thalken
Gregory L. Thalken, MD is a healthcare provider in Long Beach, CA specializing in diagnostic radiology. Medicare claims data shows Gregory provided 2,813 services to 1,501 patients. The services billed most often include low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml, ct scan head or brain without contrast, and ct scan of blood vessels of head with contrast. This provider record is associated with NPI 1861547317.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (562) 933-1550
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
2801 ATLANTIC AVE
Long Beach, CA 90806
500 Martha Jefferson Dr
Charlottesville, VA 22911
6125 Ranier Ln N
Plymouth, MN 55446
750 Brunswick Ave
Trenton, NJ 08638
310 Salem Woodstown Rd
Salem, NJ 08079
4301 W Markham St # 556
Little Rock, AR 72205
2010 Health Campus Dr
Rockingham, VA 22801
4440 W 95th St
Oak Lawn, IL 60453
1 Capital Way
Pennington, NJ 08534
Conditions Evaluated or Diagnosed
Within Diagnostic Radiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Abdomen & Pelvis
- Abdominal Pain
- Appendicitis
- Diverticulitis
- Enlarged prostate
- Gallstones
- Kidney stones
- Liver Lesions
- Ovarian cysts
Bone & Joint
- Ankle Sprain or Fracture
- Bone fractures
- Heel pain
- Hip osteoarthritis
- Osteoporosis
- Rotator cuff tear
- Torn meniscus
Brain & Head
- Brain aneurysm
- Brain tumor
- Concussion in Children
- Migraines
- Sinus infection
- Transient ischemic attack
Brain & nerves
Breast
Chest & Heart
General
Heart & blood vessels
Joint & bone
Liver & digestion
Lungs & breathing
Men's health
Neck & Thyroid
Nerve pain
Pelvic health
Spine
Spine & back
Vascular
Women's health
Procedures & services
Breast Imaging
Abdominal imaging
Biopsies
Bone Density
CT Scan
Digestive & liver
Fluoroscopy
General imaging
Heart & blood vessels
Joint & bone
MRI
Nuclear Medicine
Pelvic imaging
Screening & Prevention
Spine & back
Ultrasound
- Abdominal Ultrasound
- Carotid Ultrasound
- Leg Vein Ultrasound
- Pelvic ultrasound
- Scrotal Ultrasound
- Thyroid ultrasound
- Ultrasound
Urinary & kidney
Women's health
X-Ray
Procedures Most Often Billed to Medicare
2,813 services · 1,501 patients · 23 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Ct scan head or brain without contrast | Imaging | 70450 |
320 | More often than most peers in Diagnostic Radiology |
| Ct scan of blood vessels of head with contrast | Imaging | 70496 |
216 | More than most peers in Diagnostic Radiology |
| Ct scan of blood vessels of neck with contrast | Imaging | 70498 |
215 | More than most peers in Diagnostic Radiology |
| X-ray of chest, 1 view | Imaging | 71045 |
134 | Less often than most peers in Diagnostic Radiology |
| Ct scan of upper spine without contrast | Imaging | 72125 |
86 | As often as other peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
84 | As often as other peers in Diagnostic Radiology |
| Mri scan of brain without contrast | Imaging | 70551 |
64 | More often than most peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis without contrast | Imaging | 74176 |
53 | As often as other peers in Diagnostic Radiology |
| Ct scan of blood vessels of chest with contrast | Imaging | 71275 |
47 | As often as other peers in Diagnostic Radiology |
| Ct scan of chest with contrast | Imaging | 71260 |
40 | Less often than most peers in Diagnostic Radiology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other radiologists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other radiologists in Long Beach 7
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2006 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Ct scan head or brain without contrast 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Thalken specialize in?
Dr. Thalken is a radiologist in Long Beach, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
Where is Dr. Thalken located?
Dr. Thalken is listed at 2801 Atlantic Ave, Long Beach, CA 90806. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Thalken's phone number?
The number on file is (562) 933-1550. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Thalken?
Dr. Thalken's National Provider Identifier is 1861547317. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Thalken go to medical school?
Dr. Thalken attended Other, graduating in 2006. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Thalken have?
Dr. Thalken has 20 years experience. Calculated from a graduation year of 2006, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Thalken do most often?
According to Medicare billing data, Dr. Thalken performs imaging including ct scan head or brain without contrast and ct scan of blood vessels of head with contrast. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Thalken's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Thalken. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.