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- 75 N Maple Ave, Suite 100, Ridgewood, NJ 07450
About Dr. Co
Margaret A. Co, MD is a healthcare provider in Ridgewood, NJ specializing in allergy. According to Medicare claims data, Margaret cared for 368 Medicare patients across 2,450 services. The services billed most often include test for allergy using allergenic extract, professional service for preparation and provision of 1 or more antigens, and professional service for multiple injections of allergen. This provider record is associated with NPI 1568494128.
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
- (201) 652-7788
- Email not available
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Practice Locations
75 N MAPLE AVE SUITE 100
Ridgewood, NJ 07450
Procedures Most Often Billed to Medicare
2,450 services · 368 patients · 10 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Test for allergy using allergenic extract | Treatment | 95004 |
1,596 | As often as other peers in Allergy |
| Professional service for preparation and provision of 1 or more antigens | Treatment | 95165 |
225 | Less often than most peers in Allergy |
| Professional service for multiple injections of allergen | Treatment | 95117 |
155 | Less often than most peers in Allergy |
| Test for allergy using combination of methods with drug or biological | Treatment | 95018 |
150 | More often than most peers in Allergy |
| Test for allergy using ingested items, initial 2 hours | Treatment | 95076 |
28 | More often than most peers in Allergy |
| Test to measure expiratory airflow and volume | Treatment | 94010 |
15 | Less often than most peers in Allergy |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
108 | As often as other peers in Allergy |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
68 | As often as other peers in Allergy |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
59 | More often than most peers in Allergy |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
46 | More often than most peers in Allergy |
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.
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.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1984 at Other 8
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Test for allergy using allergenic extract 8
Providers in NJ who bill this service to Medicare most often.
Common questions
What is Dr. Co's specialty?
Dr. Co is an allergy in Ridgewood, NJ. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Dr. Co?
Dr. Co is listed at 75 N Maple Ave Suite 100, Ridgewood, NJ 07450. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Co?
The number on file is (201) 652-7788. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Co's NPI number?
Dr. Co's National Provider Identifier is 1568494128. 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
What is Dr. Co's medical education?
Dr. Co attended Other, graduating in 1984. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Co been practicing?
Dr. Co has 42 years experience. Calculated from a graduation year of 1984, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Co known for?
According to Medicare billing data, Dr. Co provides treatments such as test for allergy using allergenic extract and professional service for preparation and provision of 1 or more antigens, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Co confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Co. If this is you, claiming it is free.
Guide.md
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