Physician Profile
Karen L. Peterson, MD
Unclaimed ProfileAbout Dr. Peterson
Karen L. Peterson, MD practices otolaryngology in Pasadena, CA. Karen is a 1991 graduate of University of Iowa, Rj & L Carver College of Medicine. Karen is also listed as specializing in otolaryngology (ent). Medicare claims data shows Karen provided 688 services to 630 patients. The services billed most often include new patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more, removal of impacted ear wax, and diagnostic exam of voice box using a flexible endoscope. The provider's National Provider Identifier (NPI) is 1518970235.
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
- (424) 314-0196
- Email not available
Practice Locations
960 E GREEN ST STE 208
Pasadena, CA 91106
1100 9th Ave
Seattle, WA 98101
600 Broadway Ste 200
Seattle, WA 98122
Conditions Commonly Evaluated or Treated
Within Otolaryngology 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
Most searched conditions
Balance
Ear and hearing
- Cholesteatoma
- Eustachian tube dysfunction
- Hearing loss
- Otosclerosis
- Perforated eardrum
- Swimmer's ear
Head, neck, and salivary
Nose and sinus
- Broken nose
- Deviated septum
- Loss or reduction of smell
- Nasal obstruction
- Nasal polyps
- Nosebleeds
- Seasonal allergies
Sleep and airway
Throat and voice
- Enlarged adenoids
- Globus sensation
- Hoarseness and voice change
- Laryngopharyngeal reflux
- Swallowing difficulties
- Vocal cord nodules
- Vocal cord paralysis
Cancer
Head & Neck
Throat & Voice
Procedures & services
Most searched procedures
Office diagnosis
Cosmetic
Ear & Hearing
Ear procedures
Head & Neck
Head and neck surgery
- Neck lymph-node dissection
- Parathyroid surgery
- Parotid gland surgery
- Thyroid removal surgery
- Voice-box removal
Nose & Sinus
Nose and sinus procedures
Sleep and airway
Throat & Voice
Throat, voice, and swallowing
Procedures Most Often Billed to Medicare
688 services · 630 patients · 10 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of impacted ear wax | Procedure | 69210 |
107 | As often as other peers in Otolaryngology |
| Diagnostic exam of voice box using a flexible endoscope | Procedure | 31575 |
106 | More often than most peers in Otolaryngology |
| Diagnostic exam of nasal passages using an endoscope | Procedure | 31231 |
14 | Less often than most peers in Otolaryngology |
| Test to assess middle ear function | Treatment | 92567 |
15 | Less often than most peers in Otolaryngology |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
135 | More often than most peers in Otolaryngology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
98 | As often as other peers in Otolaryngology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
89 | As often as other peers in Otolaryngology |
| New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more | Office visit | 99202 |
58 | More often than most peers in Otolaryngology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
50 | As often as other peers in Otolaryngology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
16 | Less often than most peers in Otolaryngology |
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.
Related specialists at this location 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
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 ENT doctors in Pasadena 7
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at University of Iowa, Rj & L Carver College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1991 at University of Iowa, Rj & L Carver College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of impacted ear wax 7
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Peterson?
Dr. Peterson is an ENT doctor in Pasadena, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Otolaryngology”.
NPI registry
What is Dr. Peterson's address?
Dr. Peterson is listed at 960 E Green St Ste 208, Pasadena, CA 91106. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Peterson?
The number on file is (424) 314-0196. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Peterson?
Dr. Peterson's National Provider Identifier is 1518970235. 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. Peterson train?
Dr. Peterson attended University of Iowa, Rj & L Carver College of Medicine, graduating in 1991. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Peterson have?
Dr. Peterson has 35 years experience. Calculated from a graduation year of 1991, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Peterson perform?
According to Medicare billing data, Dr. Peterson performs procedures including removal of impacted ear wax, diagnostic exam of voice box using a flexible endoscope and diagnostic exam of nasal passages using an endoscope; provides treatments such as test to assess middle ear function, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Peterson's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Peterson. If this is you, claiming it is free.
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